All my interior lights are on whenever my battery is connected. As I understand the circuit:
- power comes off the dome/stop/taillight fuse by pink wire through a piggyback connection at the brake switch that runs to the light switch.
- power from the light switch - piggybacked to power feeding the switch from the brake switch/fuse box - runs by a pink wire to each of the 4 lights.
- each light has a return yellow wire routed through the push switches at the door jamb which ground the circuits to light when either door is opened.
- The yellow circuits are tied back to the light switch which can also turn on the lights by completing the circuit by rotating light switch to turn on the interior lights (normally an open circuit).
Taking the door push switches completely out (no possible ground) still leaves the lights on. That leaves me thinking the light switch itself must be continuously energizing the interior light circuit and must not be breaking the circuit when the knob is rotated to turn them off.
I’m not sure of an easy way to trouble shoot the light switch. Pull it out of dash and leave the wiring connected and see if a trouble light shows a completed circuit between the pink and yellow wires when the lights should be off? Does the switch ground through the dash - I’m thinking it doesn’t.
I may also have a spare switch I can substitute and see if it solves the problem.
Anything else less obvious I may be missing here?
- power comes off the dome/stop/taillight fuse by pink wire through a piggyback connection at the brake switch that runs to the light switch.
- power from the light switch - piggybacked to power feeding the switch from the brake switch/fuse box - runs by a pink wire to each of the 4 lights.
- each light has a return yellow wire routed through the push switches at the door jamb which ground the circuits to light when either door is opened.
- The yellow circuits are tied back to the light switch which can also turn on the lights by completing the circuit by rotating light switch to turn on the interior lights (normally an open circuit).
Taking the door push switches completely out (no possible ground) still leaves the lights on. That leaves me thinking the light switch itself must be continuously energizing the interior light circuit and must not be breaking the circuit when the knob is rotated to turn them off.
I’m not sure of an easy way to trouble shoot the light switch. Pull it out of dash and leave the wiring connected and see if a trouble light shows a completed circuit between the pink and yellow wires when the lights should be off? Does the switch ground through the dash - I’m thinking it doesn’t.
I may also have a spare switch I can substitute and see if it solves the problem.
Anything else less obvious I may be missing here?