I want to install relay(s) for my headlights to make them brighter, at least i heard this is the way to do it. I need to know what size relay to get, do i need two for each headlight or only one and the biggie, how do I wire it 
headlight relay help
- Thread starter secretagent
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- Thread starter
- #4
Pimp you das man, thanks 
Tis easy - the basics are a 20 or 30 amp aux relay(s) (2 for hi and low) from any auto store, fuse holder, 10 amp fuse(s), a switch (toggle or rocker) and wire. basically you'll use your existing leads from the headlight to activate the relay(s). From the + side on the battery wire in the fuse holder then from the fuse holder to the common post on the relay. select the normally open contact for wiring to the headlights. If you're going to wire both high and low beams you'll need to do this for both circuits. the other side of the contact goes to body ground or back to the - battery post. keep in mind that some light assemblies are polarity sensative so if you connect everything and blow the fuse you will have to swap the leads on the lamps until the polarity is correct. To activate the relay just connect the lead from one of the old lamps to one side (again 1 for high and 1 for low) and ground the other side to a body ground. Wire should be 14 ga min. the heavier the wire the less the resistance in the circuit and the brighter the light. These are the very basics. The schematic for the relay is usually molded into the side of the relay cover along w/ contact numbers (86, 84, 85 or something like that for the switching portion of the relay - and 2 and some other number for the coil)
Good luck.
Harry
Good luck.
Harry
Mate this a very worth while mod, I did it a while back as well as adding 100 watt globes it makes a huge difference. Just make sure you get nice and thick wire.
Cheer Dazz
Cheer Dazz