Hey man, haven't seen you around for a while. Been busy with work over my way.
Here's what I got for ya. Make sure you ( or your friend) test these wires before actually splicing into them. You'll need a 1-3 amp diode and digital multimeter.
First, locate the BCM, which is underneath the driver's side dash.
Locate connector C2 (gray colored).
Locate pin B1, which is a black wire with a white stripe. Verify with a digital multimeter that this wire sees ground when you turn the high beams on. Connect the cathode end of the diode (the end with the band around the diode) to this wire.
Next locate pin A4, which is a pink wire with a white stripe. Verify that this wire has ground when the low beams turn on. Connect the other end of the diode to this wire.
That should be it for the quad beam mod.
I don't have my book on hand with me right now and I don't remember the fog relay trigger wire on the bcm. I'll have to look it once I get to work tomorrow and I'll let you know.