A 4 way switch must be wired between two 3 way switches as shown in the diagrams on this page. Use a circuit tester to find the bad wire.
3 Way Switch Wiring Diagrams Mr Electrician
Troubleshooting 4 way switch wiring. A 3 way switch and a 4 way switch can sometimes refuse to work. Remove all of the. If any function does not have a correct power reading at the 4 way plug test the wiring going into the converter box from the vehicle side. Do not plug a trailer into the 4 way plug until function has been verified with a circuit tester. Behind the converter box. 4 way switch wiring the neutrals should be spliced and pass through the middle switch box then splice to the neutral wire that goes to the light fixture at the last switch box.
Turn off the power pull off all the switches disconnecting only the wires attached to the switch situate the wires out in the open air far away from everything and each other but keep access to a part of the box open find your multimeter. 4 way switch configurations are used to control lights with three or more switchesa 3 way switch is used on each end with one or more 4 way switches in between the two 3 way switchesthey do not have an onoff position like single pole switches. Troubleshooting 4 way switch circuits the most likely cause of circuit failure is an error in the wiring arrangement. Wiring the switches in the 4 way box connect the pair of wires from the first 3 way switch to the in pair of screws of your 4 way switch. If functions are correct at the 4 way plug proceed to testing on the trailer. Test a 4 way switch turn off power to the switches at the circuit breaker and using a tester make sure power is off.
It is important to understand how these switches are wired before attempting to troubleshoot or replace. Using a continuity tester on the 4 way switches check continuity between one of. Its okay to be nervous but not okay to be careless or rushed. Follow the how to troubleshoot 3 way switches link to test the 3 way switches. Repeat for the other 3 way switch box. Verify the circuit is wired correctly using the following guidelines.
In the first 3 way switch box connect the pair of wires leading to the 4 way box to the out pair of screws on the. You may experience challenges wiring the center 4 way switch.
Gallery of Troubleshooting 4 Way Switch Wiring
