How to troubleshoot a 4 way wiring harness installation?
Using the following information and testing procedures, you should be able to locate and eliminate the most common issues encountered during or following a 4 or 5-Way wiring harness installation and get back on the road as soon as possible. When it comes to troubleshooting a wiring installation, testing is everything.
Why is my harness not connecting to my trailer?
Ground location for harness or trailer connector is weak or ground connection has loosened over time. Harness has been overloaded due to excessive draw from lights or a short in the trailer wiring. Using one turn signal engages the turn signals on both sides of the trailer.
Do you need a tow package for a plug in harness?
Use correct plug-in harness for vehicles without a factory tow package, if available. Trailer lights worked when the harness was first installed, but eventually stopped working on one or all functions. Ground location for harness or trailer connector is weak or ground connection has loosened over time.
Where does the Green wiring go on a 4 way trailer?
Green wiring goes to the passenger side. Yellow wiring goes to the driver’s side. Make sure connectors are seated together properly (Figure 4). Disconnect the harness from the vehicle and reconnect it, ensuring connectors click together. Bent or loose pins. Loose or damaged wires. Broken locking tabs.
Using the following information and testing procedures, you should be able to locate and eliminate the most common issues encountered during or following a 4 or 5-Way wiring harness installation and get back on the road as soon as possible. When it comes to troubleshooting a wiring installation, testing is everything.
What to do if you break a wire on a harness?
If you do break the tab off of one side, don’t be overly concerned; it will still stay in place once inserted into the harness. Step 5. Once all the wires have been released (two or four, depending on the plug) you can bend back the tabs slightly, so the wire will hold firm in your new connector. You can use a penknife to slightly bend them out.
Use correct plug-in harness for vehicles without a factory tow package, if available. Trailer lights worked when the harness was first installed, but eventually stopped working on one or all functions. Ground location for harness or trailer connector is weak or ground connection has loosened over time.
Ground location for harness or trailer connector is weak or ground connection has loosened over time. Harness has been overloaded due to excessive draw from lights or a short in the trailer wiring. Using one turn signal engages the turn signals on both sides of the trailer.