Georgia Fiero Club Forum
All Things Fiero => Tech Tips, Tech Questions => Topic started by: TopNotch on March 25, 2015, 04:26:30 pm
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The left low beam in my yellow car has quit working, and it isn't the bulb. The Helms manual doesn't show any fuse or fuse-able link that would account for this. If I've missed something, please let me know. I'm assuming bad wiring or socket for now.
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Aren't the low beams wired in parallel (bridged together)? I'm thinking a bad socket, or maybe a broken wire between the left and right side - assuming that the right side is fed first, then across the car to the left.
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Saturday morning when we were headed to Dublin, the low beam was out. Later Roger switched to high beams and the headlight was a very weak yellow. I think it later went out completely. Sometimes when you install higher amperage lights, it will burn out the light switch.
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Yes, the bulb that was in the car during the parade burned out (the glass had a crack, and it was foggy inside). (I have after-market lights that use H4 bulbs.) So I replaced it with a good one, and that's when I found that the low beam didn't work. Another new bulb -- same result. Both right and left low beams come from the same place, so the switch is OK.
I'll check the wiring and socket tomorrow.
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The high and low beam on a given light have a common ground so the problem may be in the positive lead for low. Are there any relays? Put a meter on the harness plugs and see if you have power. Could be a bad harness end.
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The problem was the socket. I measured it with a meter, and got voltage. So I pushed it slowly onto a bulb, and it lit, but when I pushed it all the way on, the bulb went out again. So I bent the pins of the bulb a little, and it stays lit now. But I think I'll get a new socket.
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You might try "re-tensioning" the contact. Or maybe spraying some electronic cleaner into it, and some fresh grease.