LED Spot\Foglights
 

Looking to replace my rear main lights with the LED units found on the link below, but was wondering if there is an LED solution for the front spot/fog lights to give the front a more modern look.

Back Rear Tail Lights for BMW E53 (X5, 00-03), in smoke with LED pair BLACK | eBay,

If you have an 03-06 model, you can retrofit the 00-02 projector fog lights made by Valeo.

If you have an 01-03 model, you can replace with Depo projector lights with LED's for the headlights

Just noticed that most read led light units state they are for 00-03, but them some say 00-06

Does anyone know if the rear light changed on facelift models?

The pinout on the wiring harness changed sometime in 2003. It is a very easy fix, all you need is a small screwdriver or pick, electronic repair size.

You may also have adaptive brake lighting if you are 03+. (Brakes get brighter under panic stop). This will cause the LEDs to flicker. You can either buy a capacitor that clips onto the wiring or make one yourself. It is very straight toward.

Here is a pin out link
http://www.xoutpost.com/863406-post50.html