Hi,

I actually went to an electronics store and they had the correct size relay. It's the same dimensions but a little taller. It doesn't interfere with the other electrical wiring. It only cost 4.00$ It's a Trico EP-34 relay. I live in Canada but it says that it is made in the US. I think any relay with the model # EP-34 will work. As for headlights, I installed projector HIDs in mine. They are fantastic.

Thanks,

Mark