Small (32mm) and Tall (38mm) Example
![](https://www.4runrun.com/wp-content/uploads/tall-small-switch-side-by-side.jpg)
Single switch harness
![](https://www.4runrun.com/wp-content/uploads/5th-Gen-Single-Switch-Diagram-1024x504.png)
32mm (small) Dual switch harness
![](https://www.4runrun.com/wp-content/uploads/Dual-Switch-Diagram-Updated-Toyota-1024x504.png)
38mm (tall) Dual switch harness
![](https://www.4runrun.com/wp-content/uploads/38mm_dual_switch_wiring_diagram_toyota-1024x504.jpg)
Relay example*
![](https://www.4runrun.com/wp-content/uploads/Relay-Example-4RunRun-1024x606.png)
![](https://www.4runrun.com/wp-content/uploads/32mm-Dual-Example-4RunRun-1024x606.png)
NOTE that the trigger wires are different colors
![](https://www.4runrun.com/wp-content/uploads/38mm-Dual-Example-4RunRun-1024x606.png)
FAQ
Do I need to use a relay with the switch?
– YES, 99% of our returns are related to users not using a relay, resulting in the switch melting or failing over time.
Why does my switch always stay on?
– The switch should be wired to a switched 12v power source, like your fuse box. Find a fuse that’s only on when your vehicle is switched on. Some users tap into the cigarette lighter fuse.
Why do I keep blowing fuses?
– Are you using a relay? The switch is not designed to handle the load of light bar/fog lights/ditch lights, or other items that draw much amperage.
My switch worked for a couple of days, then stopped; why?
– More than likely, the switch was overloaded and failed. Typically this is due to not using a relay.