toutSuite,
Earlier this month I read the tundrasolutions.com threads on the speed pulse generator (SPG) and thought, as you did, that might be the solution. I got and installed one. The switch now switches between factory default for the speed sensor wire and the SPG input into the speed sensor wire. The good and bad news is
GOOD: it works great for unblocking most functions when you drive, and no need for software solutions of the 5.2 kwi file on 6.1 or 7.1 map disks - it is also easier for input - just flip a switch. Glad I did it
BAD: it does not unblock the video while driving. When the SPG is switched on it triggers the video to switch repeatedly between video and map every second or two. See my post on this along with the SPG creator's comments confirming this at
http://www.tundrasolutions.com/forum...s-all-time-10/
Joe