Chevy Light Switch Wiring

If only one of the wires turns on the test light unplug the switch and jump the two connections at the connector. From the circuit controller the circuit goes into the circuit load.

If you have any pre 1960 chevrolet diagrams not listed here.

You can find out more Diagram below

Chevy light switch wiring. They have matching black knobs but down the road i will change them to chrome knobs. Gm headlight switch circuit descriptions. Courtesy light wiring 16 white ground circuit for courtesy lights.

Heres the 1968 chevy van light switch. One problem that i immediately ran into was how to take off the knob to remove the light switch. When you turn on the headlights the headlight switch passes battery voltage through the headlight switch to the bcm.

I picked up a headlightpark light switch and a wiperwasher switch from a 1968 chevy van. This wire is spliced off of the door jamb switches and sometimes the headlight switch and goes to one half of the courtesy lights. Please note that some of these drawings and schematics may be duplicated with a different file name in this listing.

Check for good ground and then for battery voltage at the socket. The ground path can be a wire in the harness or. These diagrams are easier to read once they are printed.

When you depress the brake pedal both switch terminals should turn on the test light. Switch or a relay. Remember that this is to only be wired like this if you have grounding style jamb switches.

If the brake lights come on replace the switch. If no battery voltage is seen check the fuses and relay. Unlike many other headlight systems the normal headlights and drl lights are two separate systems but theyre both controlled by the body control module bcm.

If they check ok trace the wiring to and from the brake switch and repair as needed. 12 volt battery unfused feed into hl switch circuit breaker feeds power to 7 when headlight switch is in park lights on position. The circuit load can be one light or many lights in parallel an electric motor or a solenoid.

After the electricity has passed through the load it must return to the power supply via the ground path. Ground output wire through the rheostat. Only one of the switch terminals should turn on the test light.

The brake light bulb and turn signal bulb are the same.