I looked up your 1996 Contour OBDII codes at
www.actron.comI assumed it's P in front of the numbers
P743 TCC Elect
P750 Shift A malfunction
P755 Shift B malfunction
P1747 Pres Cntrl SolA Ckt Shorted
Transmission troubles
, maybe some wiring harness troubles? Take a look at wiring, battery. Maybe you will be lucky and find something dumb (I had found cut wires on my Dodge's fuel pump once, a small furry creature must have been hungry).