HEMI MDS questions

After talking with Chris at Hotwire, I found out that my MDS will not work. It seams that because I have the truck tranny, he supplied me a truck computer that does not support MDS (05). He also said that the diablosport tuner does not work on 06 up computers ( I don't get that ). My question is, is there any way to hot wire the MDS to turn on/off with a switch?