How are headlight relays connected to the battery?
If you install a new thicker wire in your car, you can connect it to the relay. This will solve the heat problem at the connector under the dash as the connector will only see the current needed to operate the relay. Another “While you are at it”. The original headlight wire is connected directly to the battery circuit.
Why are my headlight relays hot under the dash?
As the wiring harness ages, corrosion can also “thin out” the wire resulting in hot spots. If you install a new thicker wire in your car, you can connect it to the relay. This will solve the heat problem at the connector under the dash as the connector will only see the current needed to operate the relay.
Where does the fuse go on a headlight relay?
The two headlamps are connected together, as normal, and taken to Pin 87 of the relay. Pin 85 goes to ground while Pin 30 goes to the new 30A fuse. If you wish to, a separate wire from the fuse can be used for each relay and can be colour- coded the same as the corresponding headlamp wire. This is what I did.
What kind of wire do I need for a headlight relay?
Our kit includes separate relays for the high and low beams as well as upgraded GXL wire to make fresh connections to your lights. It’s available in both standard (pn/ 500403) and weatherproof (p/n 500431) form. Loading…
If you install a new thicker wire in your car, you can connect it to the relay. This will solve the heat problem at the connector under the dash as the connector will only see the current needed to operate the relay. Another “While you are at it”. The original headlight wire is connected directly to the battery circuit.
As the wiring harness ages, corrosion can also “thin out” the wire resulting in hot spots. If you install a new thicker wire in your car, you can connect it to the relay. This will solve the heat problem at the connector under the dash as the connector will only see the current needed to operate the relay.
The two headlamps are connected together, as normal, and taken to Pin 87 of the relay. Pin 85 goes to ground while Pin 30 goes to the new 30A fuse. If you wish to, a separate wire from the fuse can be used for each relay and can be colour- coded the same as the corresponding headlamp wire. This is what I did.
Where is the ground wire on a headlight?
The ground wire is normally a short wire attached to the vehicle chassis near the headlight. The vehicle chassis itself provides the remainder of the return path to the vehicle battery. Remove the connector from the back of the headlight.