I spent the better part of 1 and 1/2 hours on my back trying different combinations of jumpers and key positions today and still cant find a way to jump this damn switch. There are three wires at the plug. NONE are hot constant, ONE is a hot ignition(purple), and the others are ground or just dead.
I got really pissed and figured with all the time I spent trying to bypass this damn thing, I should just buy a new sitch from the dealer (Allen Samuels Dodge here in Katy $70.13).
I tried to remove the sensor today and found that the check valve is bad, causing a leak as soon as I get about two full turns on the thing.
I spoke to the dealer and the service manager says that the problem is not the switch, but the check valve. The short tube that the valve sits in is facing the ground, causing all sorts of crud from the system to collect in it, in effect causing the sensor to see a reduced pressure. This might explain why I can tap the sensor and it then kicks the clutch in.
All total, the parts are about $90. Better than 98degrees!!!!
Check with your local dealer.