Relay works with your tow bar wiring system to ensure that your towed vehicle's turn signal lights flash in tandem with your RV's lights. diode (RM-790; sold separately). Ground the white wire to your towed car's frame. Secure the relay with the included wire ties.
Diodes permit electrical current to flow in only one direction - from the motorhome to the car - prevents electrical feedback and the damage it can cause to the towed car's electrical components.
Filters
