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Author Topic: Left low beam doesn't work.  (Read 15220 times)

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TopNotch

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Left low beam doesn't work.
« on: March 25, 2015, 04:26:30 pm »
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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Raydar

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Re: Left low beam doesn't work.
« Reply #1 on: March 25, 2015, 04:34:08 pm »
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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Fierofool

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Re: Left low beam doesn't work.
« Reply #2 on: March 25, 2015, 07:44:49 pm »
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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TopNotch

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Re: Left low beam doesn't work.
« Reply #3 on: March 25, 2015, 08:52:43 pm »
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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Fierofool

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Re: Left low beam doesn't work.
« Reply #4 on: March 25, 2015, 09:28:24 pm »
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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2.    The few who learn by observation.
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TopNotch

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Re: Left low beam doesn't work.
« Reply #5 on: March 26, 2015, 01:33:34 pm »
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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Raydar

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Re: Left low beam doesn't work.
« Reply #6 on: March 26, 2015, 09:38:16 pm »
You might try "re-tensioning" the contact. Or maybe spraying some electronic cleaner into it, and some fresh grease.
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