How To Use A Four Way Trailer Light Tester

If the bulbs are not the problem disconnect the trailer s wiring system from the tow vehicle.

How to use a four way trailer light tester. Tests right left tail and brake light wiring. As soon as the trailer is plugged into the tester s trailer connector the trailer tail lights and any side marker lights. Small size is easy for storage. Reese towpower electrical circuit tester is the simplest way to check the continuity of the lighting circuit on your vehicle when you have a 4 flat connector.

When testing the connector the test light flashed for the left and right turn signals but when i ed the tester probe into the 3rd female plug and applied the brakes the test light does not go on. Testing trailer lights with your new tester is easy. Plug this easy to use trailer light tester into the 4 flat connector of your tow vehicle and the leds light up to confirm the wiring connections. This popular 4 way trailer light tester fits four way flat trailer plugs.

Lowest price guaranteed same day shipping thousands of four way trailer light tester reviews. 7 way trailer light tester. So check the lights. Best four way trailer light tester selection available.

Four way flat plugs provide connections for turn signals and taillight or side marker lights the fourth connection is a ground wire. Male and female brass connectors. 4 way led light tester is great for testing 4 way flat trailer plugs on towing vehicles. It is possible that one of the bulbs on your trailer burned out.

The led lights will illuminate to show if connections are working properly. Trailer light testers are devices for troubleshooting the wiring of a trailer and tow vehicle in a simple and convenient way. Test your right left tail and brake light wiring all with one handy light tester. The final step in the construction of your trailer light tester is connecting the white wire from the trailer connector to the negative battery terminal.

Five way flat plugs are similar to 4 way circuits but have an extra wire that allows the trailer to have auxiliary power or brake lights. Six way rectangular or round plugs have connections allowing for all of. Fits four way flat plugs. The 4 way light tester can be used to make sure your turn signals tail and brake lights are working on your towing vehicle.

Having a plug a battery elementary controls and a few indicators the tester is pretty simple in its construction which is why it s affordable and. 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. Male and female brass connectors. Indicator will show if the circuit is functioning.