horn relay

[Howard H.]

On a 70, should there be constant 12 volts from the 10 gauge red wire that runs from the battery connection on the solenoid to the horn relay? I am getting no voltage to the relay with key on or off. Doc Rebuild's wiring diagram tells me that there should be. What am I missing?

[Mark E.]

Re: horn relay

Yes, there should be 12 volts at the horn relay bus at all times. If there isn't, check for voltage at the starter solenoid. Common reasons for an open between the solenoid and relay include a blown fusible link or loose/dirty connections. The link is near the solenoid.

[Howard H.]

Re: horn relay

Thanks Mark, I thought so. Looks like we have about the same car except mine has Black Deluxe interior and no alarm system.