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A: Relays are nothing but an inductance load to electronics circuit but they do provide isolation to the outside world
There are two relays. Each one screwed to the headlight frame.
The primary relays are located under the hood, behind the passenger side headlight. You will see a bank of 2 to 8 relays, with some fuse holders. Hopes this helps.
where are the headlight relays on a 75 series landcruiser
There are multiple relays located throughout the car. There are relays back by the engine (ex. fuel pump), relays under the dash (Door locks) and relays up front (for the headlight motors).
It is located under the hood, behind the passenger side headlight. There will be a bank of relays, and a couple fuses. One of those fuses, and one of those relays, is for the fuel pump.
The ABS relays are located inside the ABS pump just behind the passenger side headlight in the engine bay.
All relays should be under the hood of your vehicle ,usually on drivers side .after you located the relay box look at the box it should be a diagram on all relays and their name .
Behind the driver right side kick panel. there is going to be a small black box. It is the HCU headlight control unit. inside are to relays.
A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circuit by a low-power signal (with complete electrical isolation between control and controlled circuits), or where several circuits must be controlled by one signal. The first relays were used in long distance telegraph circuits as amplifiers: they repeated the signal coming in from one circuit and re-transmitted it on another circuit. Relays were used extensively in telephone exchanges and early computers to perform logical operations.
Ground fault relays sense ground faults in the circuit and trigger a circuit breaker to trip off
for switching and protect the circuit in case of fault.