[McLovin]

I’m trying to wire in an illuminated switch to manually trigger an aux cooling fan (in a car).

For ease, the switch needs to be put in line on the ground side.

I currently have an unlighted switch, that of course is a simple on off switch.

The illuminated switches seem designed to work on the power side, not the ground side, but it seemed to me that would be easy to get around. Not so, it seems!

This discussion seemed promising:

http://67-72chevytrucks.com/vboard/showthread.php?p=7589718

He’s doing (did?) the same thing. It seems like he succeeded. But the last guy who posted casts some doubt. And when I tried to do what the poster did, it didn’t work. The switch turns the fan on and off, but the LED stays lit at all times.

Is it possible, or does that switch only work when used to switch on the positive side?