Help with horn issue
Ok, I need to get this horn fixed to pass TX safety inspection. I can hear the relay under the dash working, but the horn is silent. Are there any possibilities other than just tracing and testing the wires to the horns?
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Common points of failure is what I'm asking about, FWIW
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Year and model....
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Ahh, sorry. '88 GXL coupe. But I already found it by stealing the horn CPU from my '87 TII project car.
Are there any other common points of failure? |
Installing temp wires from battery to horn, to isolate if you have a wire issue. Direct power
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As you already found out, its the horn cpu that is the common failure point. Mostly anything having to do with electronic components is a failure point on these cars : P (true story by the way).
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At the largest plug in the CPU if you jumpered the Green/White wire to the Green/Red wire it should cause the horns to sound off. The G/W wire should have constant voltage on it. When the horn button on the steering wheel is depressed the horn switch puts a ground on the Green/Orange wire in the large plug at the CPU. If the first test causes the horn to work then you could stab a wire into the back of the G/O wire location in the plug and ground the other end of the jumper wire to a "suitable" ground and the horn should sound.
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It could also be an issue with the fuse.
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