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There is a little yellow box under the dash that has 2 30A breakers and on the back it says manual trans only, what is it?

It connects to the plug in for the turn signal switch, I've been trying to fix my tail and reverse lights as well as the dash lights. Inside the box are 4 40A fuses attached to a small cercut board. When i push the brake pedal the dash lights and the signal lights flash a couple times and then stay on and then i push the pedal again they click off. After takeing one or both of the 30A breakers out the reverse lights still don't work but everything else works fine, signals left, right, hazard, driving and dash lights all come on. I'm trying to figure out what this box does and if it is necessary

Posted by Anonymous on


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Posted on Jan 02, 2017

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I'd get a 12vdc test light if you don't have one already & start from plug, and keep probing back from there. It may be as simple as a bad connection under truck where joined into harness.

Posted on Nov 29, 2008

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SOURCE: 1993 Dodge Shadow...left turn signal won't flash

If you have trouble finding signal flasher, turn your right side blinker on, and follow clicking noise to flasher.

Posted on Apr 13, 2009

  • 6 Answers

SOURCE: No tail lights on 1991 Chevy Silverado. fuse is good

sounds like a broken wire in the harness. look around the bumper area,sometimes along the frame. may have to peel back some tape covering. also if you have a trailer harness look closely at those.

Posted on Jun 04, 2009

  • 2 Answers

SOURCE: Brake light, Turn signal not working rear right 06' Focus

I have a 2000 ford focus no brake lights. with the brake lights the transmission would not go into drive .replaced the brake light switch checked fuse replaced turn signal switch with no results then i moved onto the wiper switch and replaced it as much to my supp rise it fixed the problems

Posted on Aug 06, 2009

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I have seen once before that the fuse box was bad on a 2003 Dodge 3500. I had power in and nothing out. We had to replace the box. Not cheap! Hope it is simple like a loose connection though. I think I had to pull the inner fender on the drivers side to access the bottom of the fuse box. Pain in the ****, but...

Posted on Oct 01, 2009

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