This information may be of help to you in sorting out electrical
matters that you may have concerning your 1980 TR-8 (Twin Carbs with
A/C--not fuel injection). This information was compiled from the TR-8
Repair Operations Manual electrical drawings and by exploration in my
1980 TR-8 convertible. I am aware there are discrepancies (heated
rear screen in a convertible?) but I included them because the book
showed these wire colors being used for some purposes which might not
be included on every vehicle. Good Luck!
Tim Buja Cherry Valley, IL
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TR-8 Fuses and Associated Equipment
Fuse Size Fed Wire Service
# amps from color
1-2 35 Battery PK Air Con. Fan No. 2
(LH radiator fan)
3-4 15 Battery NW Heated Rear Screen
5-6 50 Battery P "Battery Aux & Horns"
Horn, door lights, power antenna, seat
belt buzzer, hazard flashers, high beam
flasher, clock, front fog lamps,
lighter, horn relay, trunk light
7-8 15 Headlamp sw R "Side Lights R/H"
park, head Front & rear RH side & marker lights,
dashboard lights, license plate lights
9-10 15 Headlamp sw RK "Side Lights L/H"
park, head Front & rear LH side & marker lights,
rear fog light
11-12 35 Battery PG Air Con. Fan No. 1
(RH radiator fan)
13-14 25 Main/Dip Sw UK Dip Beam L/H
15-16 25 Ign switch G "Ignition Aux"
"ign" Reversing lights, windscreen wiper,
brake lights, turn signals, low fuel
light, crankcase vent solenoid
17-18 25 Main/Dip Sw US Main Beam L/H
19-20 35 Ign Sw LG "Heater & Air Con. Blower"
"on" A/C compressor clutch, ventilation fan
21-22 25 Main/Dip Sw UW Main Beam R/H
23-24 25 Main/Dip Sw UR Dip Beam R/H
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Wire Colors and Functions
B Black G Green
K Pink LG Light Green
N Brown O Orange
P Purple R Red
S Slate U Blue
W White Y Yellow
B Ground
G Ignition Aux--from fuse 15-16
N Battery
R RH park/tail/side, license plate lights
U Headlights on
W Ignition Switch "ign"
BP Brake dP switch to brake light, lamp test from ignition switch
GB Fuel sender to gauge
GN Reverse light switch to lights
GO Low fuel sender to delay relay
GP Brake light switch to lights
GR LH turn signal
GU Temp sender to gauge
GW RH turn signal
LGB Washer pump from steering column switch
LGK 4 way flasher to hazard switch
LGN Turn flasher to signal switch
LGR Low fuel delay relay to light
LGS Hazard switch to turn flasher
LGW Radiator temp switch to radiator fan low speed relay
NK Headlamp motor CB to motor relays
NLG Wiper park switch
NU Headlamp switch to lamp motor--down
NY Ignition warning light to alternator field
PB Horn switch to relay
PG Radiator fan fuse 11-12 to radiator fan high speed supply relay
PK Radiator fan fuse 1-2 to LH radiator fan motor
PLG Heated rear screen relay to radiator fan high speed gnd relay
PN Heated rear screen switch to relay
PW Door lights to door pin switch, trunk light to trunk pin switch
PY Horn relay to horns
RB Ignition + to distributor from ballast resistor
RG Park or Headlights on--parking light supply
RK LH park/tail/side light
RLG Wiper normal speed
RU Rear fog light
RW Dash panel lights
RY Front fog lights
SO Radiator fan high speed supply relay to RH radiator fan motor
SR Engine temp switch & AC hi-press cut-in to high speed fan relays
SY LH fan motor to low speed relay & high speed gnd relay
UB RH headlamp position contact to motor relay
UK LH headlamp position contact to motor relay
ULG Wiper high speed
UO RH headlamp motor supply from motor relay
US LH headlamp motor supply from motor relay
WB Electronic ignition to coil & ballast
WG Ballast resistor to coil +; Inertia switch to fuel pump
WK Ignition Switch "acc"
WN Oil press sender to light
WP Power antenna signal lead
WR Ignition Switch "start"
WS Tach signal from ballast res.
WY Starter solenoid to ignition coil--full voltage to coil
EOF: TR-8 Fuses / Wire color codes TKBuja 03/06/90
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