I have read all the threads about swapping the new tt mirrors on and the plug for the newer mirros into my older 99 harness is no big deal. I have 2007 doors and mirrors on my truck and a 99 wiring harnedss truck is a 99 f350. I cannot find the adapters for the wiring but again no big deal to connect the mirrors but I cannot find a pigtail to connect the new style switch to the old wiring harness. I am at the end of my rope on this one. Ford doesnt carry the adapters anymore according to my dealer so I will hardwire the connection behind the speaker. I dont know how to intergrate the new switch into the old harness without a pigtail. Any ideas. You all have always come through for me and I know you will this time too. Thank you in advance I have pictures of the connectors if you are interested.