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So I got my HIDs in and have been trying for the last two days to wire up the relay. the issue I am having is that both the relay and the HID bulb have ballast plugs so I am not sure what to do. I cut the plugs off of the relay to try and tap into the bulb's wire and run it off of that, but all with no luck.

I'm running them now without a relay and I am worried about melting my stock wiring. Any help would be appreciated.

I don't have HID, but I imagine you want the original bulb wiring to power the relay coil, and the relay to switch power to the HID ballast. The HID bulb should plug directly into the ballast? Also specifying which set up you have will help others walk you through it.

Maybe take some pictures of your setup and we can go from there, since the wiring diagrams didn't help.

Well I can't take pictures today due to the weather outside and the fact that I am away from home.
If there are 2 plugs for each ballast and each ballast can only accommodate one plug, which plug (relay or the bulb itself) should be plugged into the ballast?

I'm really worried about messing up my stock wiring. My friend has been running his without a relay for a few months without issues (even though I told him to get one), but is there a minimum amount of time for the wiring to start overloading?

For running only HID's in stock housings you deserve to melt the wiring You'll likely burn up the MFS plug before you harm the harness, though.


In all seriousness though, if you have two similar plugs (one of those plugs should be male and one should be female) I'm going to assume you are working with a relay harness that isn't for bixenons, and actually most likely isn't for 9007 headlight bulbs.

In that case, one is for your existing wiring harness to plug into (to trigger the relay--sending or removing power to/from the ballasts) and the other plugs into your ballast. Off your ballast you have another set of single wire plugs that plug into the bulbs.

Here is a crude photo of an HID setup and relay harness I purchased from DDM Tuning strictly as a test system, which will likely never get installed in a car. I run this only to aim projectors that I retrofit (Including my R/T's)

Anyway, I set this up quickly in the back room (cold!) and edited quickly in photoshop... But I think you'll get the idea. I set it up exactly how you'd set it up in a car using the relay harness I think you have. (In case anyone is wondering, that battery is a 12V backup battery that powers Cirrus aircraft avionics systems in case of electrical failure)



Powered up, using a jumper plug that most bulbs supply you with.. Makes adapting other bulb styles easier... One wire is positive and one wire is negative. These are your RELAY trigger wires (which are your OEM plug wires)

I have projector lights now with an H1 projector harness.

Here's my harness:




The red and black wire that aren't connected to the ballast plug are for the wiring to the H1 connector. It came with the male ends. But I currently have the hids connected to the H1 connector.

That looks correct for a relay harness. So I'm not really sure what the problem is? From what I can see everything is there to make it work as it should. Also I'm going to assume those plugs you cut off (for whatever reason) were connected... and those run to your ballasts.

I may still be missing something?

I wasn't sure which wire set you cut, but if you cut the plug off the other pair of wires (labelled headlight connector) just swap the two labels in the drawing.

But my bulbs have a connector that goes to the ballast as well. so one of them can't be plugged in. That's where my issue is.

if you use a relay harness you have to route the wires for the ballast completely different.
Nomally they would get theyr energy from your stock H1 connector in the headlights.
So routing would be:

headlight switch --- into the headlight H1 socket --- out of the headlight to the ballast --- back into the headlight to the hid bulb.

but now you make it:

headlight switch --- relay harness --- ballast --- into the headlight to the hid bulb



look at this picture:
you mean that light blue wire (and the corresponig wire/plug)?
you can remove that if you use a relay harness cause the current comes now from the relay and not from the original headlight plug anymore!

relay harness should come with a superseal connector that plugs directly into the ballast - and so you can remove the other wire from the hid kit cause it is not used anymore!