Hook up your trailer and connect the trailer light harness. So check the lights.

Trailer Wiring Problem Vehicles Contractor Talk
Trailer tail light wiring troubleshooting. The best way to solve your trailer lights wiring issue is to eliminate possible problems one by one until you have pinpointed the root cause of the malfunction. If the bulbs are not the problem disconnect the trailers wiring system from the tow vehicle. Have a helper stand back to see if the running lights stoplights and blinkers are working properly. Stop and turn are combined leds. If all the lights appear dim or you have no lights at all check the trailer light harness at the tow vehicle. Check your vehicles plug configuration.
Trailer light problems can be traced to any point in either the tow vehicles electrical system or trailer wiring so visual inspection and testing are the first things to do. Troubleshooting hopkins tail light wiring converter question. It is possible that one of the bulbs on your trailer burned out. Two types of a trailer wiring tester. Have hopkins converter 48845 will not send power to trailer lights. It can be frustrating when your wiring isnt working especially when you are not sure where to begin troubleshooting.
Our guidelines will help you narrow down and repair the most common causes of issues during 4 and 5 way wiring installations. Because the most common reason for trailer lights not working properly is a bad or missing ground check the trailers and trucks ground connection first. Learn how to troubleshoot fix or repair trailer wiring issues or problems. This video will show you how to diagnose and troubleshoot common issues what your trailer lights arent working correctly. Use the outlined testing methods to determine whether the issue is on the trailer or the vehicle side so you can more easily pinpoint trouble areas. Motorhome with 6 pin round out to 4 pin on trailer.