Tow vehicle wiring problems getting you down?
Here's a low cost, easy to build tester!
Advanced Professional RV Wiring Tester More info!
Just plug it in to your tow vehicle's trailer plug socket to:
- Check your brake lights
- Check the right and left turn signals
- Check the running light circuit
- Check the backup lights
- Check your brake controller for output
The tester takes the place of your trailer - you can test your tow vehicle circuits anywhere!
RV Tow Vehicle Wiring Tester
Build it yourself !
Instant Download - Complete plans, circuit diagram, and step by step instructions.
Only $4.95
- Wiring the 7 pole RV plug
- Constructing the light board
- Wiring the lights
- Using your tester
