Welcome aboard pigzmickey - your module seems talk across the forums at the mo!
IMHO I don't think the roof should operate at speeds greater than 10MPH so no need to consider. Also, My understanding is that BT99 has considered remote operation although I'm not sure where the 1 button remote signal is physically derived from.
BT99
If the logic levels are 12V? shouldn't those be 4000 series
http://www.standardics.philips.com/products/hef/ - 4011B for the 2 I/P NAND ( 7403) and a 4025 for the 3 I/P NOR (7427) ?