⚠ WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Plug tester into vehicle's conventional 4-prong flat towing plug. Operate vehicle's turn signals, lights and brakes!
When power is present, circuit's green light will glow. Built-in male and female ends so it never has to be removed.
Save time de-bugging trailer light problems!
