StockSS Posted November 24, 2011 Report Share Posted November 24, 2011 So my high-beams only work when they want to (about once every 3 months). I checked my bulbs - they are good. I checked and swapped my high-beams relay - it is good. I'm starting to think the wiring harness connecting the lights to the electrical panel is bad. I get no voltage to the lights when I engage the high beam switch in the cab. I can hear the relay switch when I engage them but no lights. Any suggestions? Quote Link to comment Share on other sites More sharing options...
Miller812 Posted November 24, 2011 Report Share Posted November 24, 2011 I had this problem in my 94 gmc. Replaced the whole high beam switch/blinkers. That whole piece and it solved the problem Sent From My Droid X on Vortex Quote Link to comment Share on other sites More sharing options...
StockSS Posted November 24, 2011 Author Report Share Posted November 24, 2011 I had this problem in my 94 gmc. Replaced the whole high beam switch/blinkers. That whole piece and it solved the problem Sent From My Droid X on Vortex Thanks, I'll look into what a switch cost. Quote Link to comment Share on other sites More sharing options...
paulguy Posted November 24, 2011 Report Share Posted November 24, 2011 if the relay ia turning on then the switch is probably fine. I think your right about the wiring. Check the fuse. Test for power at the relay. Pin 87 or 30, then if there's power, check under fuseblock for power. Quote Link to comment Share on other sites More sharing options...
SSclone05 Posted November 24, 2011 Report Share Posted November 24, 2011 (edited) yeah bro chek the fuses when i install mi hid kit i dont diconect my battery and all my high and low beam dont turn on i changed the bulbs and nothing so i change the fuse and they work the same thing on the DRL and turn signal light and was the fuse Edited November 24, 2011 by SSclone05 (see edit history) Quote Link to comment Share on other sites More sharing options...
StockSS Posted August 21, 2012 Author Report Share Posted August 21, 2012 yeah bro chek the fuses when i install mi hid kit i dont diconect my battery and all my high and low beam dont turn on i changed the bulbs and nothing so i change the fuse and they work the same thing on the DRL and turn signal light and was the fuse It isn't a fuse.... I know I haven't posted about this topic in a while. I just haven't had the time to mess with this issue, plus I haven't been driving my truck all that much anymore due to gas prices and shitty mileage (01 cavalier is my beater now). I'm going to re-address this issue this weekend though. Quote Link to comment Share on other sites More sharing options...
StockSS Posted June 29, 2013 Author Report Share Posted June 29, 2013 Update- I had a buddy of mine hook up a tech II to see whats up. The switch in the cab is working, the BCM is receiving the signal and sending it to the relay. Relay is energized and the fuses are fine. We checked for voltage at the relay and its fine. It seems the problem is in between the fuse and relay connection. We jumpered that connection and viola, the high beams came on. So that told up the problem is within the fuse block. I pulled the fuse block out but I cant figure out how to open in to correlate what pins connect where. Anyone know how? Quote Link to comment Share on other sites More sharing options...
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