Flickering high beams

[1995voyagerES]

This evening I was driving home from a little car show and just before I arrived at home my high beams started to go off and on rapidly.
As soon as I switched back to normal driving lights everything was okay.
If I switch back to high beams they work but after some time (seconds to half a minute, depending how long the high beams were on) they start to flicker again.

Wiggling the cables that go to the fuse box didn't change anything.

Is this a known problem?
Where should I start to look?

Could be burnt wires on the light switch but last time I checked they were okay.


Greetings

Chris

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[riotwarrior]

Check light switch itself for signs of excess heat. Thats a known area of failure.

Adding relays for hi and low removes load from switch thus runs cooler and lights brighter

Search headlight relay mod

 

[madpogue]

Adding relays for hi and low removes load from switch thus runs cooler and lights brighter

Search headlight relay mod

This. Goes doubly so if you're running any "high-output" or "high power" type bulbs.

 

[OLDBULL8]

Haven't messed with headlights for ages, but way back when, the headlight circuit was protected by quick resetting circuit breakers, one for each side, have no idea if that's the case now.

 

[Rot Box]

Been there done that

The LMC hd relay kit is by far--without a doubt--no questions asked THE best thing I've done to my truck: http://www.lmctruck.com/icatalog/fd/full.aspx?Page=78

Not a bad price, and simple to install The relays used 'might' be difficult to find at a parts store so order a couple spares just in case.

 

[1995voyagerES]

Haven't messed with headlights for ages, but way back when, the headlight circuit was protected by quick resetting circuit breakers, one for each side, have no idea if that's the case now.

I heard closely near the fusebox last evening and yes, it was clicking (or sparking ) rapidly somewhere, but not loud! Could this be resetting circuit breakers?
(It was dark: I couldn't see sparks)

Last year I already thought about a headlight relay mod... I think it's time now

 

[riotwarrior]

H E A D L I G H T switch

 

[OLDBULL8]

Forgot about it, but isn't that circuit breaker plugged into the fuse panel. I'm with riotwarrior, head light switch, burnt contacts = hi amps.

 

[hce]

Old bull right its not the circuit breaker in the fuse box. Its the built non replaceable circuit breaker in the headlight switch. The bimetallic switch fatigues over time, think of if as a larger version of a blinker flasher. Hi beams pull more amps then the low beams and heats up the bimetallic strip and causes the contacts to open. Once open there is no load the strip cools and contacts close to repeat the cycle.

 

[towcat]

This evening I was driving home from a little car show and just before I arrived at home my high beams started to go off and on rapidly.
As soon as I switched back to normal driving lights everything was okay.
If I switch back to high beams they work but after some time (seconds to half a minute, depending how long the high beams were on) they start to flicker again.

Wiggling the cables that go to the fuse box didn't change anything.

Is this a known problem?
Where should I start to look?

Could be burnt wires on the light switch but last time I checked they were okay.


Greetings

Chris

is this the '96 or the '88?
if it's the '88 make sure to rule out a failing floor dimmer switch FIRST.

 

[1995voyagerES]

is this the '96 or the '88?
if it's the '88 make sure to rule out a failing floor dimmer switch FIRST.

It's the '88.

I'll check the dimmer switch first

Thanks for all the replys.
I already though it would be either the headlight or the dimmer switch but I asked here just in case there is another known problem.

Give me some time and I will report back what it was.

 

[1995voyagerES]

Oh, what I forgot to mention: Some time ago the interior lights stopped working. Could there be a relation between them not working and the headlights/high beams ?

 

[towcat]

Oh, what I forgot to mention: Some time ago the interior lights stopped working. Could there be a relation between them not working and the headlights/high beams ?

you will need to isolate door contact switches and then headlight switch there.