Auto Electrical Relay Catalogue Index

Solution Graphics
Product Section Link
12 Volt NO.  Normally Open Relays
12 Volt NC Normally Closed Relays
12 Volt Changeover Relays
12 Volt Relays with integral circuit breakers or fuses
12 Volt Bistable Relay
12 Volt Timer Relays
12 Volt Solenoids
12 Volt VSR Voltage Sensitive Relays

12 Volt Flasher Units

 
24 Volt NO Normally Open Relay
24 Volt NC Normally Closed Relays
24 volt Changeover Relays
24 Volt Relays with integral circuit breakers or fuses
24 Volt Bistable Relay
24 Volt Timer Relays
24 Volt Voltage Sensitive Relays
24 Volt Solenoids

About Auto Electrical Relays

Auto electrical relays are used to provide remote switching of automotive electrical circuit loads.

Auto electrical switching relays have a low current electrical input signal (at rated voltage) connected to an electromagnetic coil circuit which connects to from a switch or electrical component.

The signal circuit may be +ve power input and -ve switched control (typical for computer controlled circuits)
or -ve input and positive power switched.

Auto electrical switching relays have a load circuit to switch higher current loads between load input (typically terminal 30) and load output terminals (typically terminals 87 or 87a).

Automotive relay cost

Relays are individually priced see items. Labour cost for changing car relays depends on accessibility and location.

Car Relay Checks

Car relays can be checked using a multimeter to measure

  • Relay coil circuit resistance continuity (Ohms)
  • Voltage signals
  • Voltage drop across relay switching contacts for circuit under load.