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Author Topic: Headlight problem  (Read 4094 times)

March 25, 2011, 08:27:35 pm

8v-of-fury

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Headlight problem
« on: March 25, 2011, 08:27:35 pm »
Here is a weird one. 1984 Jetta, relay'd headlights. Converted the low beams to 90/100w H4's.

Lows and highs are relay'd (H4 highs are coming :) lol) Turn on the parking lamp switch selection, all the parking lamps/dash lights/ and city lights in the new H4 beams come on. Turn it to the next selection (headlights) nothing happens. The only way to get the low beams to come on is to give the high beam selector/turn signal handle a flick to high and back. And the lows will come on. and be fine from there.. When you turn the headlights off on the switch the city lights and parking lights and dash lights will go off.. takes another 5-6 seconds for the headlights to turn off... what is going on here? Swapped out relays, same thing.. Headlight switch failure? why does it hold the lights on for 5s after turning the switch off?

Weirdest Thing!  ???
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Reply #1March 25, 2011, 09:19:33 pm

rabbitman

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Re: Headlight problem
« Reply #1 on: March 25, 2011, 09:19:33 pm »
Got me beat. When did it first start happening?
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Reply #2March 25, 2011, 09:22:14 pm

8v-of-fury

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Re: Headlight problem
« Reply #2 on: March 25, 2011, 09:22:14 pm »
Shortly after installing the H4's... but that doesnt make sense.. Because the stock wiring fires the relay's..

ITS WHACK lol
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Reply #3March 26, 2011, 01:51:14 pm

chopper03

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Re: Headlight problem
« Reply #3 on: March 26, 2011, 01:51:14 pm »
If the cooling fan is running when you shut the lights off some times they act as a
generator while spinning without power applied. It back feeds thru every thing
until the fan stops turning.
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Reply #4March 28, 2011, 02:20:36 pm

8v-of-fury

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Re: Headlight problem
« Reply #4 on: March 28, 2011, 02:20:36 pm »
Not the cooling fan, Dunno whats going on! lol
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Reply #5March 28, 2011, 03:39:23 pm

macka

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Re: Headlight problem
« Reply #5 on: March 28, 2011, 03:39:23 pm »
sounds like you are getting power from a source outside of the circuit, and it is powering your relay.
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Reply #6March 28, 2011, 08:39:16 pm

8v-of-fury

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Re: Headlight problem
« Reply #6 on: March 28, 2011, 08:39:16 pm »
wouldn't it have been apparent prior to adding relays? the relay feeds are the stock wiring. I dunno its whackk
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Reply #7March 28, 2011, 08:43:16 pm

theman53

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Re: Headlight problem
« Reply #7 on: March 28, 2011, 08:43:16 pm »
Have you looked at your wiring? Maybe there is something backwards?
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Reply #8March 28, 2011, 09:14:10 pm

8v-of-fury

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Re: Headlight problem
« Reply #8 on: March 28, 2011, 09:14:10 pm »
backwards wouldn't work the lights. 30 gets the battery power, whatever pin is across from it (85?) goes to the lights. 86 is switched by stock wiring, and 87 is ground.. or what have you. I cannot recall the numbers.

DUNNO
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Reply #9March 29, 2011, 04:21:11 am

theman53

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Re: Headlight problem
« Reply #9 on: March 29, 2011, 04:21:11 am »
I know, I did mine shortly after you did yours, but sometimes things get switched around and it is easy to check. I am thinking at the other end of the wires. Maybe somthing is scuffed up or crossed? If you have another HL switch you might try that. If that switch is known good. Maybe the wiring is getting DC bleed through somthing else?
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