help with blown circuit..

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Jul 18, 2003 | 08:49 PM

theole34

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From: ny

help with blown circuit..

1989 f150 5.0 302 4x4
my headlights, taillights, dome, horn, radio, cig lighter all went out after a bad rainstorm. i have pulled all of the fuses, and they are good. i probed all of the fusible links and all are good for continuity. i am at a loss for an explanation here.

where should i be looking now.

additional - i have a set of KC daylighters wired into the headlights as well as a BS set of fogs on the same circuit.

any help appreciated.

robbie

Last edited by theole34; Jul 18, 2003 at 08:51 PM.

Jul 18, 2003 | 10:18 PM

Franklin2

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From: Virginia

help with blown circuit..

Probe the fusible links for 12 volts. You may have a bad connection where they all tie together near the starter relay.

Jul 18, 2003 | 10:23 PM

theole34

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From: ny

help with blown circuit..

cool will do. right now they show continuity from the relay bolt. i did not check for voltage yet. i will though.

robbie

i may as well clean the whole damn post while i am at it.

Jul 19, 2003 | 03:13 PM

theole34

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From: ny

help with blown circuit..

all fusible links show good voltage on the side away from the relay. i found two wires that show some heat damage. lt grn/red and lt green coming from the brake light switch. still digging.

r

Jul 19, 2003 | 05:22 PM

ZombieSlayer

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From: Napa

help with blown circuit..

Have you replaced the relay?

Jul 19, 2003 | 05:51 PM

theole34

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From: ny

help with blown circuit..

would it be good to change the relay if the battery side and away side show good voltage. the black/org wire.. shows good voltage. at the fusebox.. #16 black/org - to - green/yellow shows 0 voltage. at the headlight switch the black/orange shows no voltage. i am beat right now.. spent all day tracing wires.

robbie

Jul 20, 2003 | 09:31 PM

steve83

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From: Memphis, TN

help with blown circuit..

If the headlight switch isn't getting power, trace that wire back to the battery. At some point, you'll find the break in it, probably at a fusible link near the relay.

There's no need to replace the relay.