1993 Concorde 3.5, no spark after tranny swap

Here is the situation. I have a 1993 concode 3.5 that I bought off of a friend with a fried tranny. we swapped out the transmission, and when we weht to start it back up, we have no spark. We have checked the ground pulse, and get nada. when hooked up normally, the test light flashes when the b+ is grounded and the engine is being cranked over. Would REALLY appreciate any input, as it purred like a kitten on the way into the garage, but did not move...

If it was running good before you worked on it you probably forgot to plug in a connection. This happens all the time check your work throughly.

crank sensor sounds like the problem may not have gotten plugged back in or maybe it got hit and ruined during installation or if it was taken out during the r&r it was not put back in at the proper depth ethier to far or not close enough it should be spaced about the thickness of 2pieces of paper from the flywheel/flexplate