Wow nice detail FLCJ8. Thank you very much for the schematics. I narrowed it down to a weak ground...we got noise! The old horn was bad however, I tested it by hooking it up to the battery and nothing.
Spankrjs, that would have been my next move. Thank you.
Almost legal! All I need are seatbelts and to wire up the dash. I can at least get it inspected and registered so I can drive it around a bit.
I figured out most of the dash lighting and most of it works except for the dash courtesy lighting that illuminates the knob functions/descriptions. It's the orange (pos) wires that don't get power when I turn on the lights. I did see that this plug (see below in red) is unplugged buts some of these wires get power whenever the headlights are turned on, so I'm wondering if this is supposed to plug into something? Its located left of the steering wheel, next to the headlight switch. Was initially thinking it may be a fuse holder to power the lights, but looks more like a plug. looking at schematics to try to figure it out.....