Unplugged the dimmer module, put in a new fuse: fuse didn't blow. Then turned on the headlights, fuse stayed good. Did notice that the park lamps and tail lights did not illuminate, would that be normal?

 

I would not think so. I know it uses a lot of fuses, but plug the dimmer module back in and see if the fuse blows again.

 

Put the dimmer module in, fuse didn't blow. Turned on the headlights fuse stayed. But no park tail or instrument lights.

 

A wire has finally burnt in two somewhere, so you will have to get a testlight and start tearing things apart to find it. Here's a link to a diagram

taillights diagram
http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=63035

dash lights diagram
http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=63040

 

Thanks for the diagrams. Where would you recommend that would be a good place to start looking?

 

The brown wire leaving the parking lamp relay. With a good fuse in place and the lights on and the relay in place, see if you have voltage on the brown wire leaving the parking lamp relay box.

 

I have to pull the lights **** out and then push it in a little to get the parking lights to come out with the headlights, after about 5 second the parking lights start flashing. All the fuses under the hood are good but fuse number 4 in the fuse box under the dash (warning buzzer, exterior lamps, instrument illumination) keeps blowing ?? Can you guys help

 

You forgot to tell us what you are working on.

 

1994 ford f-150 DOT extended

 

When you pull the switch out halfway, you are crossing up the contacts inside the switch, making the headlight circuit power the marker light circuit. The headlight circuit has a circuit breaker, so when you put the marker light circuit that has a short onto the headlight circuit, the circuit breaker starts cutting the circuit on and off to protect it.

Of course fuse 4 is supposed to power this circuit, and it's protecting it because it's blown.

This circuit 4 feeds the brown wire, which runs front to back, powering all the marker lights. It's difficult to troubleshoot this circuit the problem could be anywhere. But your best bet is to think about your truck and make likely guesses to where the problem may be. Here are some good places to guess;

1. Anywhere some work has been done recently.

2. Anywhere something has been added, like running boards with lights in them, etc.

3. A common place to have problems is at the rear bumper where trailer wiring is added.

 

I was doing a few searches looking for information on a 4 pin round connector under the dash of my '96 E-150. Heavy gauge wire, probably power seats plug or modified vehicle power.

...and I stumble upon this thread.

Franklin you are one knowledge bearing man. And patient? God you are patient...

You've been hammering out solutions piled on for over 7 YEARS through this pipe.

I read the whole darned thing.

Well done Sir! I have no question, no 'help me' sorrow. Just wanted to applaud a fellow fix it guy that goes above and beyond for free.

Karma can be a lovely woman too... May she smile upon you!

 

I have a Ford F150 with no tail lights,running lights,dash lights or dome light..I also would like to know where the On/Off switch for the Hazard Lights is located..I got pulled over by a cop for no tail lights and he told me to turn my flashers on and I told him I would be glad to if he could show me where to turn em on at,,he couldnt find it either,,,me being a woman,,he let me go and told me to be careful,,,thank God

 

Ive checked the bulbs and fuses,,all aregood

 

What year truck are you working on? Add the engine in there too and the transmission for good measure(auto or manual).

 

Its a 1990 and its 5 speed standard