Hi,
Okay, we need to check what are called fusible links. They function the same as a fuse, but look like a regular wire.
If you look at the attached pic, I have circled five different ones. These fusible links supply power to multiple different things, so I feel this is where we need to start. Also, you indicated the horn works, and if you notice in the pic, it is a separate fuse for the horn.
What you will have to do is locate the wires by color as indicated in the pic and confirm if there is power to them.
I noted you are a mechanic, so let me know if you need anything else.
Take care,
Joe
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Friday, June 19th, 2020 AT 8:00 PM