Put wire across terminals C15 and C14, if the horn works then you know the circuit is good from the battery all the way down to the ground for the horn. #3 - You can also check for 12 volts at the relay.. For many Jeep Wrangler owners, the electrical system can feel like a black box, full of mystery and potential headaches. Whether you're chasing down a phantom electrical drain, installing new off-road lights, or simply trying to understand why your horn decided to quit, a reliable jeep wrangler wiring diagram is your most powerful tool.
If your Jeep horn isn't working, start by checking the horn relay and fuse. The horn should work when directly connected to the battery. If it does, the problem likely lies in the wiring, contact disc under the horn button, or the spring-loaded contact. Consult your Jeep's Factory Service Manual (available via MudMagnetYJ's link) for the correct wiring diagram for your model year, and ensure.. This document contains information about wiring diagrams, including: - The contents page lists various sections of the document, including component identification, general information, splice locations, and wiring diagrams. - The general information section provides an index of topics and information on circuit identification, locating systems, modules/controllers, and troubleshooting wiring.