Circuit tester, for a 4 way flat vehicle connector, uses led's to test the vehicle wiring to assure the towing light circuits on the vehicle are wired correctly, for use with 12v applications.
WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is 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.