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John Ballard valued contributor
Joined: 11 Feb 2004 Posts: 2646 Location: Dubbo NSW
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Posted: Fri Mar 20, 2020 12:39 pm Post subject: High Beam problem |
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I have a problem with my new wiring and loom . All went well till I got to the lights, the high beam warning light is on with high or low lights.
Checked the lamps and when on low there is about 6 volts coming back up the high cable which is enough to put the warning light on. Making it worse I picked up a signal off the high beam for my driving lights.
So far I have
changed lamps 3 times ( all lamps showed 6 to 7 volts leak)
replaced relay on spots
redone all earth connections
changed lamp in warning light
connected chassis/earth wire to speedo
All without success
any ideas
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zabond Free Wheeling
Joined: 28 May 2012 Posts: 127 Location: Neerim East Victoria Australia
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Posted: Sat Mar 21, 2020 7:26 am Post subject: |
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are they sealed beam h/lights?
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John Ballard valued contributor
Joined: 11 Feb 2004 Posts: 2646 Location: Dubbo NSW
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Posted: Sat Mar 21, 2020 7:38 am Post subject: |
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No. Narva. 60/55 watts
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zabond Free Wheeling
Joined: 28 May 2012 Posts: 127 Location: Neerim East Victoria Australia
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Posted: Sat Mar 21, 2020 8:00 am Post subject: |
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bummer I had similar prob when I fitted sealed beams had to change orig earth to stop feed back
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Scouse moderator
Joined: 15 Sep 2003 Posts: 5266 Location: Wollondilly, NSW
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Posted: Sat Mar 21, 2020 1:16 pm Post subject: |
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Bypass the dipper switch & see what happens.
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John Ballard valued contributor
Joined: 11 Feb 2004 Posts: 2646 Location: Dubbo NSW
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Posted: Sat Mar 21, 2020 4:59 pm Post subject: |
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I will try that tomorrow, but I have tried 6 lamps on the bench all 55/60watt H4 all when on low leaked 6 to 7 volts back through the high filament, which is enough to bring the warning light on.
I am thinking a one way diode at the moment.
What do you mean by "change the original earth"
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zabond Free Wheeling
Joined: 28 May 2012 Posts: 127 Location: Neerim East Victoria Australia
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Posted: Sun Mar 22, 2020 8:08 am Post subject: |
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h4"s & some sealed beams use a different terminal on the globe as earth[cant remember which one ]so I had to change wiring to earth through correct term instead of it earthing back through h/beam term/hi beam indicator globe, I think I found out by removing the indicator globe and it stopped the feed back if that makes sense
Russ
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John Ballard valued contributor
Joined: 11 Feb 2004 Posts: 2646 Location: Dubbo NSW
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Posted: Sun Mar 22, 2020 12:54 pm Post subject: |
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Thanks
I am using top terminal for earth (white wire on socket ) red is high blue is low. High and Low are the two side parallel pins. To earth I have a lug under the bolt that holds the cable to the inner mudguard.
Just about to take a light out of my car and see how I wired them some years ago as they work well and always have.
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John Ballard valued contributor
Joined: 11 Feb 2004 Posts: 2646 Location: Dubbo NSW
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Posted: Sun Mar 22, 2020 3:34 pm Post subject: |
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Zabond
I owe you thanks a wiring alteration at the socket and all OK.
My car has three black wires coming from the sockets whereas the new one I am using on my Ute have a red, white and blue. Having wired a few trailers etc with 7 core where white is negative I presumed the white was negative as per most auto wiring ( Chinese perhaps do not know this)
So the correct connection looking at the socket face on horizontal one on top is low beam, vertical on the LHS is high beam and the RHS vertical is negative or earth. If you have the orange sockets with coloured wires it is white low, blue high, and red negative.
Thanks again
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