To test the other wires detach the multimeter from the green contact in the trailer plug and reattach it to whatever contact you want to test. To test if any of the wirings in the 7 pin plug is not working you will need to use your digital multimeter and ensure it is capable of testing for volts.
Multimeter Basic Functionality And Howto Motor Vehicle
How to test trailer wiring with a multimeter. Using a multi meter to troubleshoot and check the voltages and grounds on a trailer light connector. If you are wanting to use a multimeter to test the 12 volt system on your vehicle when you are installing the curt t connector wiring harness part c56165 you would set the multimeter like part btmt15 to 20 on the dc side. This will take the reading for a system that has 0 to 20 volts. If the trailer lights function with such a setup it is clear the issue is. Next insert your black lead into the com port and your red into the voltage port. How to test 7 pin plug with a multimeter.
Disconnect the trailer from the vehicle and run a test to determine if the trailer lights function properly. So disconnect the trailer plugs and use the wires on the pin to help you identify the specific pinholes you want to test. It is still a simple process but in this case you would have to power your trailer light them with a vehicle battery. Wire the vehicle side wiring harness to a standalone battery. For a trailer light test without a vehicle you would need some wires to attach your plugs to the battery. All you have to do is link up the white wire to the negative and the colored wires to the positive.
I have attached a photo of the btmt15 and have noted where the test position is. Then touch the black wire on the multimeter with the same colored contact under the light at the back of the trailer. See part 2 checking lighting system with an ohm meter. Turn your multimeter to the v symbol on a multimeter dial. What youre going to need to do this is a circuit tester and a buddy in the drivers seat to operate the. A quick and easy way to test the lights on any trailer with a flat 4 connector.
Today im going to show you how to test the functionality of a trailer four way connectors. This method allows testing without a tow vehicle present and allows the tow vehicle to be eliminated as a possible.
Gallery of How To Test Trailer Wiring With A Multimeter
