Need fuse/ relay board wiring diagram for 76 914 Options

[LCOX]

Anyone know where I can find a fuse/relay board diagram for a 76 914. Need the relay board diagram for the one in the interior not the one in the engine compartment.
-More specifically I'm having problems with the power relay socket that sends power to the horn, fresh air fan and wipers none of which works. Need to know where the 4 wires from this relay socket go.
-the 4 wires coming from this relay socket are red/black stripe, red/white stripe, red and tan are the colors of the wires that I need more routing info on.
-Any help appreciated. Thanks L

[Tom]

LCOX,
Had the same issue on my 76 some years ago. Wires were OK. Issue was relay prongs contacting the socket were not good. Fix was to wire brush/lightly sand, then wash with isopropyl alcohol or contact cleaner and dry the contacts as best as you can. A 22 cal. bore brush works on the socket OK. Before inserting the relay, turn it upside down and spread the male prongs slightly. It allows a tighter fit in the socket. I knew I had an issue because my radio was powered off of that circuit and when I would hit a small bump, the radio would go off, that is until the next bump, when it would suddenly come back on.
Tom