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Troubleshooting Turn Signal Not Working on Hopkins Tow Bar Wiring Kit for Jeep Wrangler


After installing the kit, everything works and towed with my motorhome for 2 trips. On the 3rd trip, the left turn signer not working. Unpluged Jeep, all signers working ok. Motorhome signers ok. Any idea? Thanks.


Expert Reply:

It's possible the converter box had an internal problem which caused it to stop working, but to test this you need to reinstall the part # HM56200. Use a circuit test like part # PTW2993 to test the voltage going into the box and coming out. If the voltage on the left turn signal is present on the input side when the turn signal is on but not the output side the box is at fault. If there's no voltage on the input then the issue is either the wiring or the connector not making good connection.

You should also check the pins of all of the connectors for corrosion and clean as needed as that's typically what causes issues like this.

expert reply by:
Jameson C

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