Park Light Fuse blows and blows.

[heavyd10000]

OK I know there are a few threads about this but none help.

1996 SL2

The other day at night, i turned on my lights and the park lights came on and then off (blew fuse), and now i replaced the fuse and blows right away.

What i have done is check the wiring beside the light plugs (brake/park, front signal/park, front single bulb marker) and have taken every light out stated above.

I have also taken the the connectors off of the dash, heat/ac controls, and taken out the radio.

And i put my multimeter in place of the fuse and its pulling over 20 amps (10 amp fuse)

Is there any place i should be looking next for a short??

Oh yes there is trailer wiring with a black box from crappy tire.

So i need ideas!!

[madpogue]

FIRST - Disconnect the "black box" and re-test.
NEXT - If it's an aftermarket radio, disconnect it and re-test.
NEXT - Disconnect the dash light dimmer and re-test.

[heavyd10000]

Originally Posted by madpogue

FIRST - Disconnect the "black box" and re-test.
NEXT - If it's an aftermarket radio, disconnect it and re-test.
NEXT - Disconnect the dash light dimmer and re-test.

ok done the first 2

dimmer next.

[heavyd10000]

OK took dimmer out and now it only draws 1 amp - think its fixed, should i get a new dimmer switch??

[madpogue]

PM me a reminder, and I'll check the FSM on testing that dimmer. We might be able to temp'ly bypass it to verify the rest of the circuit is okay. If you've got enough spare fuses, just for S&G, you could try it again once each, with the dimmer turned all the way up, and all the way down.

[heavyd10000]

Originally Posted by madpogue

PM me a reminder, and I'll check the FSM on testing that dimmer. We might be able to temp'ly bypass it to verify the rest of the circuit is okay. If you've got enough spare fuses, just for S&G, you could try it again once each, with the dimmer turned all the way up, and all the way down.

Well I got the car back together except the dimmer and rear dash cover (putting leather on it to match the front dash) And all the park lights work now - installed new ones, they were old!

But the dimmer is a PWM (Pulse-width modulator), and have built a few for HHO.

I have a military surplus PWM 5 amp 15 VDC, does the dash lights run more than that??

[heavyd10000]

OK so the interior light dimmer was bad, and replaced with one i had, and works good - pics.

Thanx for the Help.