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Bad Headlight Relay?
My 1974 Super has a headlight problem. And I am wondering if the headlight
relay is bad. Here is what I have tried: Both high beams work. Left low beam works, but Right Low beam is out. Dimmer works fine. Took #3 fuse out (left low beam that works), exchanged it on #4 fuse (right low beam). Still no low right beam. #4 fuse works in #3 holder, so the fuses are fine. Disconnected #4 fuse wire that runs from fusebox to headlight. Hooked a wire from battery positive to this wire. Low right beam works. Connecting this wire to other terminals (like #7) results in no low right headlight. But when I taped the #4 wire to the #3 wire, both headlights work. So as a temporary solution, I put a 16 amp fuse in #3 holder. Basically, both lights are running on the #3 fuse now. Is the headlight relay bad? Or is it possible to know from this? Lynn 1974 Super |
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Lynn Martin wrote:
> My 1974 Super has a headlight problem. And I am wondering if the headlight > relay is bad. Here is what I have tried: > > Both high beams work. > > Left low beam works, but Right Low beam is out. Dimmer works fine. > > Took #3 fuse out (left low beam that works), exchanged it on #4 fuse (right > low beam). Still no low right beam. #4 fuse works in #3 holder, so the > fuses are fine. > > Disconnected #4 fuse wire that runs from fusebox to headlight. Hooked a > wire from battery positive to this wire. Low right beam works. > > Connecting this wire to other terminals (like #7) results in no low right > headlight. But when I taped the #4 wire to the #3 wire, both headlights > work. So as a temporary solution, I put a 16 amp fuse in #3 holder. > Basically, both lights are running on the #3 fuse now. > > Is the headlight relay bad? Or is it possible to know from this? > > Lynn > 1974 Super > > I can say for sure that the relay (aka dimmer) is OK. This is a fuse problem, or a fuseholder problem. Look on my web site: Electrical/Headlight section There is a simplified diagram which will show how the circuit works. Speedy Jim http://www.nls.net/mp/volks/ |
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