gu wiring problem

Submitted: Sunday, Dec 02, 2001 at 01:00
ThreadID: 578 Views:1500 Replies:3 FollowUps:1
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I have a 2001 gu 3.0 td, with driving lamps fitted. The relay is tripped off of the high beam so as to operate only when the high beam is operating and therefore legal. Seems to wrrk allright, with ample cable dimension, however I noticed that the fuel gauge is being affected ( shows low levels when actually full)since I have fitted the lights.I can't seem to find the problem and don't think that the high beam and fuel gauge would be using the same relay. Any solutions or ideas?? Thanks in anticipation.
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Reply By: Peter Gordon - Sunday, Dec 02, 2001 at 01:00

Sunday, Dec 02, 2001 at 01:00
Eric, check the earth wire(s)! Is it the same dimentions as the positive wire and does it run back to the battery? These two things can make an incredible difference. It is also a good idea to earth the relay to the battery directly using the same size wire (at least 4mm or preferably 6mm), depending on load. Let me know how you go. Cheers
AnswerID: 1520

Follow Up By: Eric - Monday, Dec 03, 2001 at 01:00

Monday, Dec 03, 2001 at 01:00
Thanks Peter, it was the earth wire from the relay causing the problem, wiring it direct to battery has fixed problem. Thanks again.
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FollowupID: 479

Reply By: sean - Monday, Dec 03, 2001 at 01:00

Monday, Dec 03, 2001 at 01:00
I have same vehicle with rally 4000's fitted. I dont have any problems. Fuel guage is fine.

The relay is powered off a headlight plug adapter (no cut wires) and the lamps are powered and earthed directly to the battery.

If you wish to compare notes on our vehicles you can email me on sdavis@octa4.net.au

Sean
AnswerID: 1524

Reply By: eric - Monday, Dec 03, 2001 at 01:00

Monday, Dec 03, 2001 at 01:00
Thanks Sean, you were on the right track with the earth back to battery, did this and fixed the problem. thanks.
AnswerID: 1525

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