no headlights

[Lostnwalmart]

So have checked the relays, fuses, and replaced the switch but still no headlights? Wgat am I missing? Bulbs are good still also. Going to bring the multimeter home tonight to try and fiure out what it is. Ni headlights means nk fun in mexico :-(

 

[K204DR]

too much boost?

 

[Chevycummins]

Use the meter across the fuses. I thought I had good fuses in my tail and break lights. Turned out they were bad and I couldn't see the bad spot because it was so fine.

 

[khaoskustoms]

dimmer switch?

 

[12vriviera]

Relay under the hood, did that year truck have the dimming module yet or no?

 

[Lostnwalmart]

Relay under the hood, did that year truck have the dimming module yet or no?

For the dash? Yes and it was replaced.

 

[khaoskustoms]

Relay under the hood, did that year truck have the dimming module yet or no?

For the dash? Yes and it was replaced.

I think he means the DRL module on the drivers inner fender under the brake booster/master cylinder. When they fail you usually still have headlights though.

 

[GAmes]

Could be the multi-function switch also. Try cycling it several times from low to high beams several times.

 

[Stealth hotshot]

My money is on the box under the fuse box


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[CSnyder]

Were there any burnt wires or plastic on the back of the headlight switch? There is an updated switch with a new repair harness for this problem.

 

[Howling]

When my switch went out I had to replace about 4" of the harness from it being melted, the new switch came with some wiring.

 

[Lostnwalmart]

Were there any burnt wires or plastic on the back of the headlight switch? There is an updated switch with a new repair harness for this problem.

There was one burnt contact but I replaced the wiering harness along with the switch. I am going to check the connections I made tonight with the multimeter.

 

[Lostnwalmart]

My money is on the box under the fuse box


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Box under the fuse box?

 

[BigPapa]

Box under the fuse box?

He's thinking 3rd Gen.

 

[Lostnwalmart]

Right guys this is on my 94

 

[BRE]

Multi function switch I would think.

 

[Lostnwalmart]

Multi function switch I would think.

As in high/low beams? Sigh I need my multimeter

 

[khaoskustoms]

Or even a test light. Do you have power at the headlights? What about ground? Maybe the ground wire broke.

 

[winkdemon]

any thing else not working ? or just the head light bulbs high and low

 

[BRE]

As in high/low beams? Sigh I need my multimeter

Yea... That's my thinking IF everything else checks out.