Horn and Blower problems...

[elwood]

I just bought this truck yesterday. It's a '78 with an '85 body.


Problem 1.

The horn does not work, the wire goes from the horn to that junction box on the firewall.

What color wire runs the horn, and is there a relay?



Problem 2.

The blower motor doesn't work with the switch. I noticed that there is no wire hooked to the tab thingy next to the blower motor. What color wire gives it juice? Where's the resistor located?

I'm used to playing with Ford Trucks, so I have to get used to GM stuff.

Thanks for your help!