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HID Head Lights


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#21 sco_aus

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Posted 11 April 2011 - 10:50 AM

HIDs are good but exy and I never upgraded the wiring and didn't have a problem with the H4s.

#22 rb25240z

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Posted 17 April 2011 - 08:19 PM

Started upgrading my loom, will hopefully be installed by the weekend to test the difference before I go HID. I have 90/100 H4 s already but there really dull. Before I pulled the loom I tested the voltage at the head light and with a battery voltage of 14v I only got 9v. Looking forward to finding out the results.

#23 sco_aus

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Posted 18 April 2011 - 06:14 AM

Maybe the wiring was different gauge or something between the 240 and 260, mine are far from dull with that same combo.

#24 rb25240z

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Posted 18 April 2011 - 08:25 AM

I have a 260 loom in my car. The original loom was hacked and melted. Im guessing my headlight switch and old corroded plugs are causing the volt drop.

#25 PZG302

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Posted 18 April 2011 - 09:52 AM

Any headlight upgrade, or even if you just want to get better light from standard, should include realys at the headlights, if not there already, to prevent:
  • voltage drop like that described in the posts above
  • having a bucket load of current passing through the light switch
  • melting wiring when you upgrade from the standard 55w to the normally much higher rated lights generally used

On all my older cars that I have had, I always ran relays as close to the headlights as possible. For my old ZG Fairlane, I ran 2x100watt aircraft landing lights for high beam and 2x90/140watt for the combination lights. I had a relay for each light to help carry the load of 480watt or approximately 40amps all up. In running different circuits for each light I could use lighter gauge wire than otherwise would be needed if they were all on the one circuit.




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