Cerbera wiring connector master list (Revision 3)

This page is a consolidated reference for the Revision 3 TVR Cerbera loom — the revision where the original AMP “Duomate” wire-to-wire connectors were superseded by the ITT Cannon Trident range. It lists every connector, splice joint, multiway and fuseboard block in the front and rear harnesses, with pin, wire colour, conductor size (mm²) and destination.

If you only need one area (front harness connectors, front harness connectors with photos, the MBE ECU pinout, etc.) see the more focused pages already on the wiki. This page is intended as the master cross-reference when chasing a circuit end-to-end.

How to use this reference

• J-numbers (e.g. J10) identify a physical connector on the car. They are the labels used on the official Revision 3 wiring documentation.
• Splice joints are numbered separately (front harness 1–14, rear harness 1–26). They are crimped/soldered joins inside the loom where one feed fans out to several destinations.
• Multiway connectors (J30–J35) are the big body-to-body junctions between the front harness, rear harness and dash area. Pin numbers in those connectors match between front and rear sides.
• Wire sizes are in mm² cross-section. Colours use TVR’s two-letter scheme (e.g. green/red = green with a red trace).

Caution. Wiring on a 25-year-old TVR is rarely 100% to drawing — previous repairs, alarm installs and dashboard swaps are common. Always continuity-check before relying on a colour. Disconnect the battery before unplugging any ECU.

Front harness connectors (J1–J29)

Ref	Connector	Housing	Notes
J1	Bonnet switch	2-way Trident	Earth + signal to multiway 1/21
J2	Brake light switch	2 × 6.3 mm spades	Ignition feed via splice 3
J3	Cigarette lighter	3-way Trident	Battery, earth, illumination
J4	Column pod harness	12-way Trident	Start/stop/fuel signals, illumination
J5	Courtesy lamp sub-harness	3-way Trident	Lamp control from multiway 2/11
J6	Dash switches interface	MIC IV 9-way	Fog, sidelamp, headlamp logic
J7	Dashboard instrument pod	24-way Trident	Main dash connector — see below
J8	Driver’s door connector 1	12-way Trident	Locks, windows, mirror
J9	Driver’s door connector 2	3-way Trident	Speaker + illumination
J10	Engine harness connector	19-way Grote & Hartmann	4 power + 15 signal
J11	Handbrake switch	2 × 6.3 mm spades	Earth + warning lamp
J12	Heater box (heated air)	6-way Trident	Hot-side fan
J13	Heater box (fresh air/AC)	6-way Trident	Cold-side fan + A/C request
J14	Heater control unit conn 1	MIC IV 17-way	Fan speeds, earths
J15	Heater control unit conn 2	MIC IV 17-way	A/C, mirror heat, ice sensors
J16	Ignition switch	2-way Trident	Earth + ignition control line
J17	Inner lock button + LED	6-way Trident	Central locking input
J18	Passenger’s door connector 1	12-way Trident	Mirror, window, locks
J19	Passenger’s door connector 2	3-way Trident	Speaker + illumination
J20	Low brake fluid switch	Framatome servo terminals
J21	Nose connector	19-way Grote & Hartmann	Lights, horns, fans, A/C
J22	Radio brown ISO block	Pioneer 8-way	Speakers
J23	Radio black ISO block	Pioneer 8-way	Power, illumination, memory
J24	Reverse light switch	2-way sealed
J25	Steering wheel control unit	MIC IV 17-way	Stalks, horn, indicators
J26	Driver’s window switch	6-way Trident
J27	Passenger’s window switch	6-way Trident
J28	Wiper control unit	MIC IV 17-way
J29	Wiper motor	5-way Lucas dedicated

J7 — Dashboard instrument pod (24-way Trident)

The single most-referenced connector behind the binnacle. All wires are 0.5 mm² unless noted.

Pin	Function	Colour	Destination
1	Ignition feed	green	Splice 1
2	Speedo signal	slate	Multiway 1/26
3	Main beam warning	blue/white	Multiway 1/25
4	Oil pressure warning	brown/white	Engine harness 4
5	Indicator left	green/red	Splice 11
6	Illumination	red/white	Splice 9A
7	Indicator right	green/white	Splice 10
8	Tacho input	white/black	Engine harness 14
9	EFI fault lamp	lt green/black	Engine harness 12
10	Handbrake	black/yellow	Handbrake switch
11	Alternator warning	brown/yellow	Engine harness 5
12	Earth	black	Earth point
13	Shift lamp	orange	Engine harness 11
14	Brake fluid	black/white	Brake fluid switch
15	Ice sensor 1	white/pink	Heater ECU 2/B7
16	Inertia switch warning	black/green	Multiway 1/24
17	Ice sensor 2	white/green	Heater ECU 2/B8
18	Driver’s seat belt	grey/black	Multiway 2/3

J10 — Engine harness connector (19-way Grote & Hartmann)

The big plug between body loom and engine loom. Pins 6–10 carry meaningful current — 1.0 mm² for ignition feeds, 3.0 mm² for the starter solenoid.

Pin	Function	Colour	Size (mm²)	Destination
1	Fuel pump drive	yellow	0.5	Multiway 2/1
2	Radiator fan 2 drive	green/pink	0.5	Multiway 2/16
3	Lambda heater	yellow/black	0.5	Multiway 2/17
4	Oil pressure	brown/white	0.5	Dash 4
5	Alternator warning	brown/yellow	0.5	Dash 11
6	ECU battery feed	red	0.5	Splice 8
7	Injector ignition	green	1.0	Splice 6
8	Starter solenoid	white/red	3.0	Multiway 3/9
9	Coil ignition (odd)	green	1.0	Splice 4
10	Coil ignition (even)	green	1.0	Splice 4
11	Shift lamp	orange	0.5	Dash 13
12	EFI fault lamp	lt green/black	0.5	Dash 9
13	Purge valve	purple/black	0.5	Multiway 2/19
14	Tacho	white/black	0.5	Dash 8
15	Radiator fan 1	green/pink	0.5	Splice 13
16	ECU ignition	green	0.5	Splice 6
17	A/C clutch	white/green	0.5	Heater ECU 2/B5
18	A/C acknowledge	white/black	0.5	Heater ECU 2/A6
19	A/C request	white/pink	0.5	Nose 15

J21 — Nose connector (19-way Grote & Hartmann)

Pin	Function	Colour	Size	Destination
1	Horns	purple/white	1.0	Multiway 3/2
2	Washers	blue/yellow	0.5	Wiper ECU A9
4	RH sidelamps	red/white	0.5	Multiway 3/4
6	LH sidelamps	red/white	0.5	Multiway 3/6
7	Engine fan 1	pink	3.0	Multiway 3/7
8	RH main beam	blue/white	1.5	Multiway 3/1
9	LH main beam	blue/white	1.5	Multiway 3/3
10	Engine fan 2	pink	3.0	Multiway 3/10
11	RH indicator	green/white	0.5	Splice 10
12	A/C request in	white/pink	0.5	Heater box cold 6
13	LH indicator	green/red	0.5	Splice 11
14	Thermistor +	black/red	0.5	Heater ECU 2/B9
15	A/C request out	white/pink	0.5	Engine 19
16	Thermistor –	black/slate	0.5	Heater ECU 2/A9
17	RH dip beam	blue/red	1.0	Multiway 3/17
18	A/C fan control	green/pink	0.5	Splice 13
19	LH dip beam	blue/red	1.0	Multiway 3/19

J25 — Steering wheel control unit (MIC IV 17-way)

Pin	Function	Colour	Destination
A2	Headlamp input	blue	Splice 12
A6	Wiper 2 signal	red/green	Wiper ECU B1
A7	Main beam signal	blue/white	Multiway 1/28
A8	Dip beam signal	blue/red	Multiway 1/27
A9	Left turn	green/red	Multiway 1/29
B1	Ignition	green	Splice 2
B2	Horn	purple/black	Multiway 1/32
B3	Hazard	brown/black	Multiway 1/31
B4	Battery	red	Splice 8
B5	Earth	black	Earth point
B6	Wiper 1 signal	blue/green	Wiper ECU B2
B8	Wash signal	blue/yellow	Wiper ECU B9
B9	Right turn	green/white	Multiway 1/30

Front harness splice joints

These are the fan-out points inside the front harness. Knowing the splice number is the quickest way to find where a circuit feeds from.

Splice	Purpose	Feed in	Fans out to
1	Ignition supply	Multiway 2/13 (green 1.0)	Column pod 4, dash 1, both door conn 1/12, radio black ISO 7
2	Ignition supply	Multiway 2/1 (green 1.5)	Wiper ECU A4, wiper motor 4, steering ECU B1
3	Ignition supply	Multiway 2/18 (green 1.0)	Brake switch, reverse switch A
4	Ignition supply	Multiway 2/12 (green 1.5)	Engine harness 9, engine harness 10 (coils)
5	Ignition supply	Multiway 2/21 (green 1.0)	Heater ECU 1 pins B2/B5/B9, heater ECU 2 pins A4/B1
6	Ignition supply	Multiway 2/9 (green 1.5)	Engine harness 7 (injectors), engine harness 16 (ECU)
7	Battery supply	Multiway 2/14 (red 1.5)	Radio memory, lock LED, clock, courtesy lamp, cigarette lighter
8	Battery supply	Multiway 2/20 (red 1.0)	Steering ECU B4, engine harness 6 (ECU backup)
9A	Instrument illumination	Multiway 3/15 (red/white 1.0)	Column pod 7, dash switches A1, dashboard 6, on to 9B
9B	Illumination (downstream)	from 9A	Cigarette lighter 3, both door conn 2/1, radio black 6, both window switches 4
10	RH indicator	Multiway 3/14 (green/white 1.0)	Nose 11, heater box cold 3, dashboard 7
11	LH indicator	Multiway 3/16 (green/red 1.0)	Nose 13, heater box hot 3, dashboard 5
12	Headlamp signal	Dash switches B1 (blue 0.5)	Steering ECU A2, multiway 1/17
13	Radiator fan 1 signal	Engine 15 (green/pink 0.5)	Nose 18 (A/C fan control), multiway 2/22
14	Mirror heater drive	Heater ECU 2/A3 (blue/orange 0.5)	Both door conn 1/7

Multiway connectors (J30–J35)

Three connectors join the front and rear loom halves. The same pin numbers appear on both sides — front J30/J31/J32 mates to rear J33/J34/J35.

• Multiway 1 (J30/J33) — 36-way Trident — body/lights/window logic signals
• Multiway 2 (J31/J34) — 24-way Trident — power feeds, audio, engine control signals
• Multiway 3 (J32/J35) — 19-way Grote & Hartmann (4 power + 15 signal) — lighting and fan power

Multiway 1 — 36-way (selected critical pins)

The full pin list appears under J30 (front side) and J33 (rear side). Where a pin is shown going to a “splice joint”, that pin physically just passes through the multiway.

Pin	Function	Colour
1	Driver door pin switch	white/purple
4 / 5	Driver window motor 1 / 2	yellow/black, yellow/green (1.5 mm²)
7	Passenger door pin switch	white/purple
10 / 11	Passenger window motor 1 / 2	red/black, red/green (1.5 mm²)
13	Lock button signal	black/white
14	Locked LED signal	black/red
15	Fog lamp switch	yellow
16	Sidelamp switch	white
17	Headlamp switch	blue
18	Start signal	black/white
19	Stop signal	black/red
20	Fuel level signal	green/black
21	Bonnet switch	blue/black
22	Rear window	purple/red
23	Rear fog warning	yellow/red
24	Inertia switch warning	black/green
25	Main beam warning	blue/white
26	Road speed	slate
27 / 28	Dip / main beam signal	blue/red, blue/white
29 / 30	LH / RH turn signal	green/red, green/white
31	Hazard signal	brown/black
32	Horn signal	purple/black
33–36	Window switch signals	red/green, red/black, yellow/green, yellow/black

Multiway 2 — 24-way (selected critical pins)

Pin	Function	Colour	Size
1	Ignition feed (wipers)	green	1.5
2	Fuel pump signal	yellow	0.5
3	Driver’s seat belt	slate/black	0.5
4	Ignition (hot heater)	green	2.0
5–8	Rear speakers (LH+/–, RH+/–)	green/red, black/green, slate/red, black/slate	0.5
9	Ignition (injectors)	green	1.5
10	Brake light drive	green/purple	0.5
11	Courtesy lamp drive	purple/red	0.5
12	Ignition (coils)	green	1.5
13	Ignition trunk feed	green	1.0
14	Battery trunk feed	red	1.5
15	Ignition switch control	black	0.5
16	Radiator fan 2	green/pink	0.5
17	Lambda heater	yellow/black	0.5
18	Ignition feed	green	1.0
19	Purge valve drive	purple/black	0.5
20	Battery feed	red	1.0
21	Ignition feed	green	1.0
22	Radiator fan 1 signal	green/pink	0.5
23	Reverse lamps	lt green/brown	0.5
24	Ignition (cold heater)	green	2.0

Multiway 3 — 19-way (power + lighting)

Pin	Function	Colour	Size
1	RH main beam	blue/white	1.5
2	Horn power drive	purple/white	1.0
3	LH main beam	blue/white	1.5
4	RH sidelamps	red/white	0.5
6	LH sidelamps	red/white	0.5
7	Engine fan 1	pink	3.0
9	Starter solenoid	white/red	3.0
10	Engine fan 2	pink	3.0
14	RH indicator	green/white	1.0
15	Instrument lamps	red/white	1.0
16	LH indicator	green/red	1.0
17	RH dip beam	blue/red	1.0
19	LH dip beam	blue/red	1.0

Rear harness connectors (J36–J67)

Ref	Connector	Housing
J36	Alarm	12-way AMP Mate-N-Lok
J37	Alarm accessory socket	6-way Trident
J38	Boot courtesy lamp	2 × 6.3 mm spades
J39	Boot lid (brake lamp)	2-way Trident
J40	Boot lid switch	6.3 mm spade + M4 eyelet
J41	Boot lock solenoid	2 × 6.3 mm spades
J42	Boot release switch	2-way Trident
J43	Dim-dip control unit	MIC IV 9-way
J44	Dim-dip unit	6 × 6.3 mm spades
J45–J48	Door lock control unit (4 connectors)	MIC IV 17/9/9/9-way
J49	Driver’s door lock motor	2 × 6.3 mm spades
J50	Driver’s seat belt	2-way Trident
J51	Fuel level sender	2-way sealed Raffenday
J52	Fuel pump	M4/M5 eyelets, 1.1 µF suppressor across + to ground
J53	Ignition control unit	MIC IV 9-way
J54	Immobiliser	12-way Trident
J55	Indicator control unit	MIC IV 17-way
J56	Inertia switch	3-way AMP Econo-seal
J57	Lights control unit	MIC IV 17-way
J58 / J59	Number plate lamps	2 × 6.3 mm spades each
J60	Passenger door lock motor	2 × 6.3 mm spades
J61	Purge valve	2-way Raffenday sealed
J62 / J63	Rear speakers RH / LH	AMP faston 4.8 + 2.8 mm
J64	Rear heated window	2 × 6.3 mm spades
J65	LH rear lamp cluster	Ford 5-way timer
J66	RH rear lamp cluster	Ford 5-way timer
J67	Speedo speed sensor	2-way JST sealed

J53 — Ignition control unit

Pin	Function	Colour	Size
A1	Battery (ign)	red	1.5
A2	Ignition control earth	black	0.5
A5	Battery (start)	red	0.5
B1	Ignition output	white	1.5
B2	Start signal	black/white	0.5
B3	Stop signal	black/red	0.5
B5	Starter	white/red	0.5

J54 — Immobiliser (12-way Trident)

Pin	Function	Colour	Destination
1	Ignition	green	Splice 2
2	Battery	red	Splice 1
3	Earth 1	black	Earth point
4	Ignition (ECU)	green	Fuseboard B/15A
5	Ignition (ECU)	green	Multiway 2/9
6	Earth 2	black	Earth point
8	Starter	white/red	Ignition ECU B5
10	Starter	white/red	Fuseboard D/85L
11	Fuel pump	yellow	Multiway 2/2
12	Fuel pump	yellow	Fuseboard K/2

J55 — Indicator control unit

Pin	Function	Colour	Size
A1	RH indicator	green/white	1.0
A2	Flasher input	lt green/brown	1.0
A3	LH indicator	green/red	1.0
A6	Ignition	green	1.0
A7	Flasher power	green/yellow	1.0
A8	Battery	red	1.0
A9	Hazard	brown/black	0.5
B1	RH turn signal	green/white	0.5
B4	LH turn signal	green/red	0.5
B9	Earth	black	0.5

J57 — Lights control unit

Pin	Function	Colour	Size
A1	Rear fog lamps	yellow/red	1.0
A2	Fog lamp warning	yellow/red	0.5
A3	Sidelamps	red/white	1.0
A4	Sidelamp signal	white	0.5
A6	Dip beam drive	red/yellow	2.0
A7	Battery (dip)	red	2.0
A8	Ignition	green	0.5
A9	Battery (main)	red	2.0
B1	Battery (side)	red	1.5
B2	Fog lamp signal	yellow	0.5
B3	Headlamp signal	blue	0.5
B5	Dip beam signal	blue/red	0.5
B6	Main beam signal	blue/white	0.5
B8	LH main beam	blue/white	1.5
B9	RH main beam	blue/white	1.5

J56 — Inertia switch (3-way AMP Econo-seal)

Viewed from the cable entry side with the lock bar at the top.

Position	Function	Colour	Size
LH	Pump input from fuse K/4	yellow	1.5
Middle	Pump output	yellow/black	1.5
RH	Warning lamp	black/green	0.5

J65 / J66 — Rear lamp clusters (Ford 5-way timer)

Pin	LH cluster (J65)	RH cluster (J66)
1	Reverse lamp (lt green/brown)	Brake lamp (green/purple)
2	Earth	Sidelamp (red/white)
3	LH indicator (green/red)	RH indicator (green/white)
4	Brake lamp (green/purple)	Earth
5	Sidelamp (red/white)	Rear fog (yellow/red)

Note the cluster handedness — pin 1 has a completely different meaning between LH and RH. Don’t blindly swap clusters.

Door lock control unit (J45–J48)

The Cerbera door lock ECU sits behind the dash and handles central locking, window logic, alarm interaction and boot release. It has four separate connectors.

J45 — Door lock ECU connector 1 (17-way MIC IV)

Pin	Function	Colour
A1	Driver’s pin switch	white/purple
A2	Lock button	black/white
A3	Driver inner release	orange/white
A4	Passenger inner release	orange/white
A6	Passenger outer release	orange
A7	Driver outer release	orange
A8	Boot release	black/red
B1	Passenger pin switch	white/purple
B2	Driver window position	blue/yellow
B3	Alarm active	pink
B4	Passenger window position	blue/red
B5	Driver window down	yellow/green
B6	Passenger window up	red/black
B7	Passenger window down	red/green
B8	Driver window up	yellow/black
B9	Road speed	slate

J46 — Connector 2 (9-way)

Pin	Function	Colour
A1	Earth	black
A5	Battery	red

J47 — Connector 3 (9-way) — lock motors and courtesy lamp

Pin	Function	Colour
A1	Boot motor	red/blue
A2	Battery (driver lock)	red
A4	Earth	black
A5	Battery (passenger lock)	red
B1	Courtesy lamp	purple/red
B2	Driver lock 1	blue/orange
B3	Driver lock 2	blue/green
B4	Passenger lock 1	blue/white
B5	Passenger lock 2	blue/yellow

J48 — Connector 4 (9-way) — window motors

Pin	Function	Colour	Size
A1	Earth	black	1.5
A2	Driver window 1	yellow/black	1.5
A4	Passenger window 1	red/black	1.5
A5	Earth	black	1.5
B1	Driver window 2	yellow/green	1.5
B2	Battery (driver window)	red	1.5
B3	Locked LED	black/red	0.5
B4	Battery (passenger window)	red	1.5
B5	Passenger window 2	red/green	1.5

Rear harness splice joints

Splice	Purpose
1	Battery feed from fuse 3 → alarm, alarm accessory, immobiliser
2	Ignition from fuse 12 → alarm, alarm accessory, immobiliser
3	Alarm-active state signal → alarm accessory and door lock ECU 1/B3
4	LH indicator → multiway 3/16, alarm pin 9, LH rear cluster
5	RH indicator → multiway 3/14, alarm pin 12, RH rear cluster
6	Door pin common → splices 19 & 20 via 1N4001 diodes, alarm accessory
7	Boot/bonnet pin switches → alarm 3, boot courtesy lamp, multiway 1/21
8	Battery from fuse 8 → boot courtesy lamp, multiway 2/14
9	Brake lamp drive → both rear clusters and boot lid
10	Battery from fuse 11 → boot lock solenoid, door lock ECU 3/A5
11	Dip beam drive → multiway 3 pins 17 and 19
12	RH main beam drive → dim-dip B2, multiway 1/25, multiway 3/1
13	Ignition from fuse 7 → lights ECU A8, dim-dip unit 1, dim-dip ECU B3
14	Ignition from fuse 17 → multiway 2 pins 21 and 24
15	Sidelamp drive → splice 25, multiway 3 pins 15/4/6, dim-dip unit 5
16	Road speed → door lock ECU 1/B9, multiway 1/26
17	Battery from fuse 10 → door lock ECU 2/A5, ECU 4/B2
18	Battery from fuse 9 → door lock ECU 3/A2, ECU 4/B4
19	Driver’s pin switch → door lock ECU 1/A1, on to splice 6 via diode
20	Passenger’s pin switch → door lock ECU 1/B1, on to splice 6 via diode
21	Fuel-pump-relayed feed → purge valve A, multiway 2/17
22	Master ignition to auxiliary relay coils → fuseboard G pins 75 and 85N
23	Battery from fuse 20 → ignition ECU pins A1 and A5
24	Un-fused battery from block L (large spade) → fuseboard F/56B, G/57R, I/56A
25	Sidelamp drive → both number plate lamps and both rear clusters (pins 2/5)
26	Battery from fuse 8 → fuseboard A pins 30K and 85K (horn)

Note on splices 6, 19 and 20. The door-pin diodes are 1N4001 silicon devices with the cathode band facing away from the splice. They isolate the two pin-switch circuits so opening one door does not back-feed the other.

Fuseboard blocks (partial)

The fuseboard is split into lettered AMP connector blocks A–P. The source document covers blocks A–E in full; later blocks were cut off in the upload.

Block A — AMP grey 8-way (horn / flasher)

Pin	Function	Colour	Size
30K	Horn power	red	1.0
85K	Horn power	red	0.5
85M	Flasher power	green/yellow	1.0
86K	Horn signal	purple/black	0.5
86M	Earth	black	0.5
87M	Flasher output	lt green/brown	1.0

Block B — AMP black 8-way (ignition master)

Pin	Function	Colour	Size
15	Master input	white	1.5
15A	Fuse 12 output	green	1.0

Block C — AMP blue 8-way

Pin	Function	Colour	Size
56AK	Fuse 8 output	red	1.5
15A	Fuse 12 output	green	1.0

Block D — AMP green 8-way

Pin	Function	Colour	Size
85L	Crank signal	white/red	0.5
75A	Fuse 15 output	green	1.5
56BL	Fuse 11 output	red	1.0
56BR	Fuse 10 output	red	1.5
56AR	Fuse 8 output	red	1.0
56AL	Fuse 9 output	red	1.5
P	Fuel power	red	1.5
58L	Fuse 7 output	green	1.0

Block E — AMP yellow 8-way (engine fans/starter)

Partially documented in the upload — pin 87H carries engine fan 2 (pink, 3.0 mm²) and pin 87LA carries the starter solenoid feed (white/red, 3.0 mm²).

Later fuseboard blocks (F–P) are referenced repeatedly in the splice tables above (e.g. fuse 17 = block M pin 75AK; fuse 20 = block P pin 30AS; horn fuse = block K pin 6; engine fan 1 = block F pin 55).

Practical tips when working with Revision 3 looms

• Trident vs Duomate. If you find blue/grey rectangular wire-to-wire connectors, the car is on the earlier AMP Duomate scheme. Revision 3 cars use the round-edged ITT Cannon Trident range. Pins are not interchangeable between the two families.
• Cavity marking. TVR explicitly required that every identically coloured wire be marked with its cavity number on the 24- and 36-way multiways. Many cars have lost these markings — re-label as you go.
• Diodes in the lock loom. Splice joints 6/19/20 contain 1N4001 diodes. A short or open diode here will produce confusing alarm and door-pin symptoms; check them with a meter on the diode range before suspecting the door lock ECU.
• Fuel pump suppression. J52 includes a 1.1 µF capacitor across the pump’s positive terminal to chassis. If you’ve replaced the pump, replace the cap too — it suppresses radio interference and protects relay contacts.
• Always disconnect the battery before unplugging the door lock ECU, ignition ECU or immobiliser. Hot-unplugging these is a known cause of failures.

Compiled from the official Cerbera “Connectors” Revision 3 wiring document — always verify against the original drawing and continuity-test on the car before relying on it for repair work.