Electronic Specialties 190 Relay Buddy Automotive Relay Tester
- Quick off-the-car relay tester - checks relay coil and switch contacts.
- Automatic test with good/bad indication - fails bad relays.
- Settable to 4 and 5 pin relay - tests the 3 most popular automotive relays.
- Switch contact are loaded to detect excessive resistance.
- Uses vehicle's 12 Volt battery for power.