Electronic Automotive Relay Tester Battery Checker for Cars Auto 12V UK Best
1 x Relay Tester. OIL FILTER HOUSING FOR VOLVO / FORD FOCUS MK2 S-MAX 2.5 ST & MONDEO 31338685. The coil resistance is preferably above or equal 20 ohms. If the relay is abnormal the red LED will light, it's normal the green LED will light.