Electronic Specialties 193 Diagnostic Relay Buddy 12/24 Pro Test Kit

Relay Buddy is a quick go / no-go tester for the most common automotive relays and this new version tests both 12 and 24 volt relays. If the relay fails the test 3 different trouble codes will advise you of the possible causes for the failed relay. The red LED will flash once twice or three times to indicate the problem. Trouble code definitions are printed on the back of the tester for your convenience.