Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

wiring relay for upgraded headlights

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Old Aug 8, 2008 | 10:47 PM
  #1  
CaliChevyLover's Avatar
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From: annapolis MD
Car: 1986 IROC-Z28
wiring relay for upgraded headlights

so i put h4 5000k lights in..low beams work fine but the high beams start to flicker after about 10seconds of use.

how do i wire a relay in to fix this...where can i find a relay to use?

thanx!

edit: my sig....i switched the wires so the middle lights are lows (much wider dispersion) and all 4 come on as highs...doesnt change the problem
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Old Aug 9, 2008 | 06:11 PM
  #2  
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From: Ontario, Canada
Car: 86 Trans Am
Engine: 385 Fast Burn
Transmission: 700R4 - stock (eep!)
Axle/Gears: Stock, will upgrade at some point
Re: wiring relay for upgraded headlights

My other car is a Caliber, and I've heard people had the same problem. For mine, there's some sort of heatsink looking thing between the boxes and the light. Try contacting the manufacturer and see if others have had the problem.

If that doesn't work, give send a message to this site and try and direct it to xflashjr somewhere in the message:

http://www.headlightsupercenter.com/osc/

He was very helpful on the Caliber boards, I'm sure he can help out. Can mention Fyrstorm sent you if you like, I don't get a deal out of it but it may help identify how you got a hold of him hehe!
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Old Aug 9, 2008 | 11:09 PM
  #3  
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From: Bremerton, WA
Car: 1992 RS / 1989 RS
Engine: 3.1L MFI / Vortec 383 TBI
Transmission: T5 / LS-T56
Axle/Gears: 3.42 open / 3.73 Eaton posi
Re: wiring relay for upgraded headlights

This site has lots of great info on the bosch relay and some applications. Relays can be found at Radio Shack.

http://www.classictruckshop.com/club...cts/how_to.htm

Select this page to wire a pair of relays into your headlights

http://www.classictruckshop.com/club...ead/lights.htm

The relay terminals aren't labeled, so I'll do best I can...

Pin 85 - to dimmer switch, or in wire harness to lights (tan wire = low, green wire = high)
Pin 86 - to ground.
Pin 87 - to light, pin 87A is not used
Pin 30 - to battery, also install a 30 amp fuse on this wire

Use one relay for each set of lights, you can use the same battery wire and fuse to terminal 30 of each relay.

This will enable you to use your dimmer switch to control the relays, which will in turn route battery 12V to your lights.
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Old Aug 10, 2008 | 02:38 AM
  #4  
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From: Tracy, CA
Car: '87 IROC
Engine: LB9
Transmission: TH700R4
Re: wiring relay for upgraded headlights

Are you sure not having a relay is the problem? H4 bulbs have a different "pin-out" than regular sealed beams.
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Old Aug 10, 2008 | 06:02 AM
  #5  
CaliChevyLover's Avatar
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From: annapolis MD
Car: 1986 IROC-Z28
Re: wiring relay for upgraded headlights

Originally Posted by paulo57509
Are you sure not having a relay is the problem? H4 bulbs have a different "pin-out" than regular sealed beams.
yes i used adaptors
----------
Originally Posted by Al Hasse
This site has lots of great info on the bosch relay and some applications. Relays can be found at Radio Shack.

http://www.classictruckshop.com/club...cts/how_to.htm

Select this page to wire a pair of relays into your headlights

http://www.classictruckshop.com/club...ead/lights.htm

The relay terminals aren't labeled, so I'll do best I can...

Pin 85 - to dimmer switch, or in wire harness to lights (tan wire = low, green wire = high)
Pin 86 - to ground.
Pin 87 - to light, pin 87A is not used
Pin 30 - to battery, also install a 30 amp fuse on this wire

Use one relay for each set of lights, you can use the same battery wire and fuse to terminal 30 of each relay.

This will enable you to use your dimmer switch to control the relays, which will in turn route battery 12V to your lights.
thanx alot man

Last edited by CaliChevyLover; Aug 10, 2008 at 06:03 AM. Reason: Automerged Doublepost
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Old Aug 10, 2008 | 08:38 AM
  #6  
CaliChevyLover's Avatar
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From: annapolis MD
Car: 1986 IROC-Z28
Re: wiring relay for upgraded headlights

ok im still confused....i think i'll have a pro look at it
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