Fusible link that controls horn, doorlocks, radio, and interior lights

Take the big fuses out and use a multimeter to check continuity of each. There is also a fusible link, but it doesn't sound like that was blown.

They are talking about the body control module, but I'm not sure they are right. The horn does not need the bcm to work. See diagram below. The horn relay is energized by the horn switch on the steering wheel. The switch also signals the bcm, but that is not used to power the horn.


The turn signal does not use the bcm at all. The problem there may be the switch or the wire. See diagram below.






The instrument lights DO REQUIRE the bcm, but can be rewired to bypass the bcm. The gray wire from the bcm in the diagram below powers the instrument lights. You can cut the gray wire and splice it to the brown wire from the multi function switch. Find the brown wire coming out the bottom of the steering column, skin some insulation off the wire and verify it has 12 volts when the parking lights are on. Do not cut the brown wire--just attach the gray wire to it. You will not be able to dim the lights, but they will come on.

Hello,

was the radio and interior light working before you removed the fuse for the horn? In the process of removing the fuse for the horn, you must have mistakenly tempered with the fuse for the radio and interior light.

So I would suggest you go back to the fuse box and deep them in properly because the interior and radio fuse might not be contacting properly.

I hope this makes sense to you.

Good luck.

those are all interior lights and functions. Interior fuse box. power supply and feeding fusible links need to be checked for continuity. Not an easy task. May want to have an electrical systems auto tech look at it. Hunting under the dash and around the firewall bothers my neck if you catch my meaning. sorry

How about fusible links. Got a wiring diagram?

check the fuseable links at the solenoid for power both ends,maybe replace the headlight switch

fuse is blown

The horn and the flashers are controlled by the 15 amp HAZ-Horn fuse.
The trunk light is powered by the 20 amp Dome light.
The radio is powered by the above Dome fuse, and the 15 amp Radio & CIG fuse.
With a 12 volt testlight, check for power on BOTH sides of the above fuses. If you have no power to either side of the fuses, you have an open circuit under the hood that feeds said fuses: Look for an open circuit in the main fusible link coming right off of the battery positive terminal to the wiring harness.

I just had the same issues. No headlights, interior lights, power door locks, radio controls on steering wheel, or dash lights. Pulled every fuse in cab and under hood, not a one was bad. I disconnected the battery terminals for a few minutes. When I reconnected them every thing was working.