Trailer Has Turn Signals and Running Lights but No Brake Lights Towed by 1997 Ford Ranger

Question:

I have a 97 ranger and when i hook up my boat traiker i have running lights, blinkers, but mo break lights.

Expert Reply:

This is strange because on a trailer, the blinker and brake lights share the same circuit. If you used a wiring harness like # 18002, on your 1997 Ford Ranger, that could explain the problem. This harness does not have a converter box included that converts the signal down to the 2 wire signal used by the trailer.

You will need to install Tow Ready Custom Fit Vehicle Wiring, # 118325. I have included a link to the installation instructions for you to view.

If you are using this type of harness, make sure to test the 4-Way connector at the truck for the correct signals using a circuit tester like # 3808. If the signals on the vehicle connector are incorrect, you know that the problem is on the truck wiring. If the signals are correct, then the problem is on the trailer side.

You will want to check both connectors, making sure the main ground wires are attached to clean and corrosion free bare metal surfaces. Next, check the tail lights to make sure they are grounded properly. Trailer tail lights usually ground through the mounting studs. They, too, have to be connected to a clean and corrosion free metal surface.

expert reply by:
Michael H

Ask The Experts a Question >>




Products Referenced in This Question



Product Page this Question was Asked From


Similar Expert Q&A Pages

See More Q&A Expert Answers >>




^
About Us
photos and videos
1,056,204

Original Photos & Videos

Produced to make sure you know what you are getting and you get exactly what you need.

installations
35,570

Installations Completed

To make sure products work and fit the way they are supposed to.

etrailer call center
2,476,511

Phone Calls & Emails Answered

1,125,924 phone calls and 1,350,587 emails to help find the right solution.

etrailer training
400+

Average Hours of Product Training

We get to know our products firsthand so experts can better help you.

etrailer service
71

Years of Quality Customer Service

Assisting our neighbors and customers, face to face at the counter.

etrailer experts
193,357

Pages of Expert Information

Created to make sure you have all the answers to your questions, from real experts.