Quick Question. When I start my 09 (stock wiring, 24v system intact) my Gen 2 light goes out immediately, but my Gen 1 light stays on for about 15-20 seconds. Once the truck idles for that time, it goes out. Everything seems to be charging well and she has done this since I brought her home 7 years ago. I can't remember if my 1st 09 did this, so I guess I am asking if this is normal?