Master switch for dome light?

[a31ford]

You can use a DPDT (or SPDT) toggle switch, BUT, it must be the type that has the "center off" position (so there are three switch positions).

I wold assume that the bulb is always hot on one side (check with a VOM) and the other side is grounded by the dimmer and door pin switches (I COULD BE WRONG on that).

IF it's the method I said, then cutting the return wire from the dome, and inserting the wire from above onto the center terminal, the other end of the wire to one end terminal, and the OTHER end terminal to ground,

The switch will work in the following, switch at one end, light on, switch in center position, no light (even if you open the doors or turn the dimmer), switch in the other end position, light works with doors and dimmer.

AGAIN, this is based on the door and dimmer grounding the circuit, and that might be old school by now.

Greg

 

[fixizin]

I have a '99, and that function has been broken since I bought it new from duh dealer... pisses me off, but they always wanted to keep it the WHOLE DAY AND OVERNIGHT, plus rent me a lame V6-auto F150 for $30+!!... bastiges.

The electrical schematic of this switch is very simple to me, but neither the Haynes nor Chilton's gives any clues as to the MECHANICAL aspects of removing this roller unit for repair/replacement...

Much obliged to anyone who can point the way... I've searched TRS for 'dimmer' and 'rheostat'... might have to try 'dome light' too...

Thanks in advance.