rstacy Posted July 17, 2011 Share #1 Posted July 17, 2011 (edited) Here is what I know The bulb is good. I have 12 volts on the R/Y side The RLU isnt pulling the ground down to light the bulb. Is this a common failure of the RLU? I found an interesting thread on removing/bypassing the RLU. That idea deserves some thought. When my starter switch needed cleaning, that particular device didn't tell me that my light was out anyway! Edited July 17, 2011 by rstacy Changed RSU to RLU Link to comment Share on other sites More sharing options...
rstacy Posted July 17, 2011 Author Share #2 Posted July 17, 2011 Im sorry I meant to say RLU - Reserve Lighting Unit. Is this a common failure for the RLU? Link to comment Share on other sites More sharing options...
frankd Posted July 17, 2011 Share #3 Posted July 17, 2011 I can't say if it's a problem that a lot of first Gens have or not, but on my 83 sometimes it works, sometimes it doesn't. I just got in the habit of using the position of the high/low beam switch as an indicator. On my 89, it always works. Frank D. Link to comment Share on other sites More sharing options...
bkuhr Posted July 17, 2011 Share #4 Posted July 17, 2011 Here is what I know The bulb is good. I have 12 volts on the R/Y side The RLU isnt pulling the ground down to light the bulb. Is this a common failure of the RLU? I found an interesting thread on removing/bypassing the RLU. That idea deserves some thought. When my starter switch needed cleaning, that particular device didn't tell me that my light was out anyway! Are you sure you do not have actual failure of the high beam circuit, and the RLU is preforming as designed and switching in the low beam circuit when HI is requested? Link to comment Share on other sites More sharing options...
Flyinfool Posted July 17, 2011 Share #5 Posted July 17, 2011 IF the RLU was working correctly it would light the white headlight indicator on the dash to tell you it had switched to low when you selected hi. But then the white bulb could be burnt out. Check to be sure you are actually getting hi when selected. Link to comment Share on other sites More sharing options...
darthandy Posted July 17, 2011 Share #6 Posted July 17, 2011 IF the RLU was working correctly it would light the white headlight indicator on the dash to tell you it had switched to low when you selected hi. But then the white bulb could be burnt out. Check to be sure you are actually getting hi when selected. If he gets "Hi", won't he see lights everywhere? Link to comment Share on other sites More sharing options...
rstacy Posted July 17, 2011 Author Share #7 Posted July 17, 2011 Are you sure you do not have actual failure of the high beam circuit, and the RLU is preforming as designed and switching in the low beam circuit when HI is requested? I can tell you that when I switch from low to high, the beam of the light actually changes to a wider and higher spread. I don't have any other warnings on the dash. Link to comment Share on other sites More sharing options...
scotty Posted July 17, 2011 Share #8 Posted July 17, 2011 My high beam indicator was intermittent as well, RLU not going to ground. I ended up tying the indicator to the low beam headlight wire. It has been good since. It has been a few years since I did that so I hope I remember correctly. Scotty Link to comment Share on other sites More sharing options...
Venturous Randy Posted July 17, 2011 Share #9 Posted July 17, 2011 Mine was intermitten years ago and I just ran a jumper from my high beam wire over to the high beam indicator light wire and it has worked great since. RandyA Link to comment Share on other sites More sharing options...
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