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NISTECH »
https://forums.nicoclub.com/nistech-u7581.html
Sat May 27, 2006 3:35 am
The switch provides the ground to the headlight circuit. The contacts inside typically go bad. IF you can borrow a switch to comfirm thats your problem its the easiest way. If not use a test light at the head lights and check for power and ground. If you flip the high beams on do they illuminate?