View Single Post
Old 10-28-2009, 12:17 PM   #3
61TWUK
Registered User
 
61TWUK's Avatar
 
Join Date: May 2009
Location: Charleston SC
Posts: 290
Thumbs down Re: dome light problem

Quote:
Originally Posted by markeb01 View Post
The way these dome lights work is by controlling the ground. Only one of the wires going to the light should have power, and is normally hot all the time. The other wire goes to the rheostat connector on the frame of the headlight switch. Twisting the knob/shaft varies the amount of ground through the rheostat, until it reaches the end of the cycle which provides full ground and full bulb brightness. It took me a while to figure out. I had to read up on it since I'd never seen anything wired in reverse like this. Normally the switch always controls the hot side.
man I was going to say that about the ground.
__________________
1961 Apache
SWB/SBW for now...
Built 327

You need two tools in life: duct tape and WD-40. If it moves and it shouldn't, you use duct tape. If it doesn't move and it should, you use WD-40.
61TWUK is offline   Reply With Quote