Revised: 25NO04
1969-82 C3 Corvette Turn Signal Switch Wires
Colors, Order, & Functions
1969-1982 C3 Corvette wiring for the turn signals, hazard warning, brake lights, and horn followed the color coding that is charted below. Cornering lights were also included on 1980, 81, & 82 models. All wiring is routed up into the steering column and functions are actuated through the turn signal switch. The steering column wiring and the vehicle body harness wiring come together in a narrow long connector called the “harmonica connector”.
C3 CORVETTE TURN SIGNAL SWITCH WIRING | | | | |
YEARS | HARMONICA CONNECTOR POSITION | WIRE COLOR AND GAGE
STRG COLUMN | WIRING COLOR AND GAGE
BODY HARNESS | FUNCTION |
1969 - 1982 | P | White 18 gage | White 14 gage | Supplies +12v when the brake pedal is pushed. |
1969 - 1982 | N | Dark Green 18 gage | Dark Green 20 gage | Right Rear Brake Light |
1969 - 1982 | M | Yellow 18 gage | Yellow 20 gage | Left Rear Brake Light |
1969 - 1982 | L | Purple 18 gage | Purple 14 gage | This is the +12v source for turn signal power. |
1969 - 1982 | K | Brown 18 gage | Brown 14 gage | This provides the +12v for hazard flasher operation. |
1969 - 1982 | J | Dark Blue 18 gage | Dark Blue 20 gage - 2 wires | Right Front Turn Signal Light |
1969 - 1982 | H | Light Blue 18 gage | Light Blue 20 gage - 2 wires | Left Front Turn Signal Light |
1969 - 1982 | G | Black 18 gage | Black 20 gage | Horn ground when horn button is pressed. |
1969 - 1982 | F | Light Green 20 gage | Pink/Black 20 gage | These are the key buzzer warning circuit wires. Open with key removed. Shorted together with key in lock cylinder. Also open when key is turned in lock cylinder to Run position. |
1969 – 1982 | E | Tan 20 gage | Black 20 gage | Same as F |
1980, 81, & 82 | C | Black 18 gage | Blk/Wht 18 gage | Right Cornering Lamp |
1980, 81, & 82 | B | Orange 18 gage | Orange 18 gage | Left Cornering Lamp |
1980, 81, & 82 | A | Brown 18 gage | Brown 18 gage | Feed from headlight switch. This is the +12v source to power the cornering lamps when the headlights are ON. |
With the connector disconnected none of these wires should be grounded (tied to chassis). In fact I don't think that they should tie to ground regardless of turn signal position, or activation of the hazard switch.
TurnSignalSwitchWires.doc
