Troubleshooting 7 Way Wire Functions on a Camper

Updated 07/12/2021 | Published 07/09/2021

Products Featured in This Question

Pollak 7-Way to RV Socket LED Circuit Tester - Vehicle End

(161)

$45.45

Dielectric Grease for Electrical Connectors, 2 oz.

(1500)

$11.45

12 Gauge 7 Conductor Jacketed Wire - Per Foot

(518)

$10.88

Question:

2002 prowler camping trailer. 7 way plug blue for brake, which works. Red for turn and brown for turn, which works green for running, which does not work black for 12v and white for ground. All wires pn truck plug are sending power to functions.

asked by: Donald L

Expert Reply:

It sounds like your wires are most likely all wired up correctly. If you are wanting to verify that, I recommend the Pollak 7-Way to RV Socket LED Circuit Tester # PK12741. A more likely culprit is probably damaged wiring somewhere along the circuit or possibly some corrosion built up around the running lights pin on the trailers 7-way. If you have a damaged wire you would want to splice in new wires individually for the ones damaged on your 7-way wiring or splice in a jacketed 7-way bundle part # DW04914-1 which is sold by the foot. If you come across corrosion built up on the pin you'll want to clean the corrosion off with a wire brush. Regardless of what you find I recommend using some Dielectric Grease # 11755 to help prevent corrosion in the future.

I have included a couple help articles for you to check out as well.

expert reply by: Scott S