Where is the glow plug relay located on a volkswagon jetta diesel?

Depending on the year of the car the glowplug relay will be in different places. In the year 2000 it is under the dash along with the other fuses. On my 2003 it is located out in the engine compartment underneath the bottom cover for the windshield. It is right in front of the driver sort of next to the windshield wiper motor. Not easy to get to and I broke the plastic cover that goes along the bottom of the windshield on my car. I found out that I had a bad glowplug harness and once I replaced that, no small task my glowplug light stayed off for good.