Bill,
I have a 76 as well, and I have the two stacked relays.
* The one with the purple wires is the
Horn relay, mine is on top.
Purple +12 supply to solenoid
Purple w/Yellow +12 output to horns
Purple w/Black Earth through horn button
Press the horn button, closes to Earth, provides solenoid with earth, solenoid closes contacts, +12 supplied to horns, horns have own earth.
* The one on the bottom is the
Bulb Test relay:
White w/Orange +12 supply for relay and seat belt module during starter engage
Light Green w/White Alternate earth for ERG warning light
Purple w/Silver Alternate earth for Brake, and oil warning lights
Black Earth for relay
Black Earth for solenoid
When ignition is turned to start, +12 supplied to relay, contacts close and provide an alternate ground for the EGR, Brake, oil, and seat belt warning lights(?) (module,I assume light). so they initially illuminate (can can be checked) during starting.
I only know this as I am currently trying to figure out why I have a Black w/blue wire there, it has always been disconnected.
I cannot find any mention of it on any of many schematics.
I am having issues with the seat belt system...... Anyone have any idea what it is for? I am assuming seat belt system? if so, where does it go?
Trying to get everything to work
thanks,
Stephen