Hello
I am attempting to get my horns to work on my 1965 L78 (someone has been in there before me). Here is what I have done so far:
1. Confirmed the horns themselves actually work by applying +12vdc to the green wire connector at the horn relay
2. Removed the horn relay from the car and applied +12vdc to the "Batt" side of the relay and the negative lead to the relay lug which accepts the black line from the horn button. Relay would "click" on the bench.
3. Confirmed I have continuity across the steering rag joint by using an ohm meter on each side of the joint
4. Confirmed I have +12vdc at the relay when the relay is installed in the car.
5. Confirmed that the horn relay is properly wired per AIM drawings UPC12-A8 and UPC6-B4.
One other observation which does not seem right to me is that there seems to be a continuous ground connection from the black horn button wire at the connector to the horn relay, even when the horn button is not depressed. I would have thought that should be open until the horn button is pressed. I am measuring this at the alternator bracket.
Would some of you C2 wiring gurus walk me through a step by step trouble shooting procedure to help be sort this out?
Thanks in advance
Jim
I am attempting to get my horns to work on my 1965 L78 (someone has been in there before me). Here is what I have done so far:
1. Confirmed the horns themselves actually work by applying +12vdc to the green wire connector at the horn relay
2. Removed the horn relay from the car and applied +12vdc to the "Batt" side of the relay and the negative lead to the relay lug which accepts the black line from the horn button. Relay would "click" on the bench.
3. Confirmed I have continuity across the steering rag joint by using an ohm meter on each side of the joint
4. Confirmed I have +12vdc at the relay when the relay is installed in the car.
5. Confirmed that the horn relay is properly wired per AIM drawings UPC12-A8 and UPC6-B4.
One other observation which does not seem right to me is that there seems to be a continuous ground connection from the black horn button wire at the connector to the horn relay, even when the horn button is not depressed. I would have thought that should be open until the horn button is pressed. I am measuring this at the alternator bracket.
Would some of you C2 wiring gurus walk me through a step by step trouble shooting procedure to help be sort this out?
Thanks in advance
Jim
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