Can Curt 7-Way to RV Socket LED Circuit Tester Test Trailer Wiring
Updated 09/29/2025 | Published 09/01/2025
Question:
I am online looking at the Curt 7-Way to RV Socket LED Circuit Tester, Number: C73NR. The question is: Can this item be used to check the trailer lights/wiring on the trailer side? If not, what product is needed your part number? Thanks.
asked by: Jack
Expert Reply:
Hi Jack; the Curt 7-Way to RV Socket LED Circuit Tester # C73NR only checks the 7-way functions on the vehicle side. The best way to test your trailer wiring is to hook it up to a vehicle since it requires power. If you want a standalone tester we have the Hopkins Tow Doctor Trailer End Test Unit # HM50928 which uses a 12V battery to test the trailer lights.
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Product Page this Question was Asked From
Curt 7-Way to RV Socket LED Circuit Tester - Vehicle End
- Electrical Tools
- Testers
- Circuit Tester
- Tow Function Tester
- CURT
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Robin H.
9/29/2025
Hi Jack, did you get a chance to try out the Hopkins Tow Doctor to test your trailer lights? I'm curious to know if it worked well for you, as it could help others looking for a similar solution.