Okla Rams

**0212353** · 02-09-2013, 11:40 AM

Originally Posted by myoung84

Best way to do it is with two relays but since they draw such little current you would be ok with just one relay if you find a good source to tap into. An unused ignition switched source in the fuse box would be best.

Two relays: For relay one, wire pin 85 and 30 to ground. Pin 86 to the headlight low beam 12v wire. Pin 87a gets connected to pin 85 on relay two. For the rest of relay two, wire pin 86 to an ignition switched 12v wire. Pin 30 to the battery constant and pin 87 to the positive side of the lights.

One relay: Pin 85 to ground. Pin 86 to low beam headlight 12v wire. Pin 30 to 12v switched wire. Pin 87a to positive side of lights.

Both methods will turn the lights on with the ignition and off when the headlights come on. Remember to fuse the wires coming from the battery and switched source.

LOL

Ok..........I'm a dolt with this shit. pics help.

So, this is what I have, a 5 pin relay.

One relay: Pin 85 to ground (so that one on the right). Pin 86 to low beam headlight 12v wire (the one on the left). Pin 30 to 12v switched wire (so to the fuse box, lower pin on the relay). Pin 87a to positive side of lights. (middle pin, that goes to my DRLs)

So 87 isn't used at all then right?

**myoung84** · 02-09-2013, 11:49 AM

Lol. I can do this shit in my sleep. You are correct, pin 87 doesn't get used at all with the single relay setup.

With the coil is unenergized (pins 85 & 86), pin 30 & 87a are connected. When you energize the coil (by turning on headlights) then pin 87a opens and 87 & 30 get connected.

**myoung84** · 02-09-2013, 11:53 AM

Here's a diagram of the inside of the relay. When the coil is energized, it magnetically pulls the arm from 87a to 87.

**myoung84** · 02-09-2013, 11:58 AM

I was Googleing a wire diagram and came across this. I forgot about the relay already in place for the HIDs. Use my first method and just run a wire from 87a of the HID relay and use your spare relay as relay two.