My sticker on the door panel is gone. I know that I have the later build date because my VIN is in the later group of numbers. My research and experience-to-date also indicate that the later production group had many changes related to the duty cycle.

Merkey ('88 300te) and I ('90 300te) have different ECU's. His is the 25 pin and mine is the 55 pin. Additionally, my LED does not go into a "continuous on" mode. I also verified my readings with a '92 300te here in CA.

So, many of those writeups that I have read on preforming duty cycle readings shoud be modified for the later build group.