Ok I have a 2001 dodge truck with a 318 and 94 with a 5.9 I took the transmission out of the 2001 and put it in the 94 and it runs very well except It won't shift into 3rd because I don't have the speed sensor hooked up ..because the 2001 only has 2 wires on senor and tthe wires on the 94 have 3 wires on the harness how do I wire this up can anyone help

 

Erm, the 01 trans is an RE, the 94 trans is an RH. I am surprised that anything worked at all. There is no way to adapt the newer trans to work in the older truck, without replacing ALL the electrical in the older truck. You need a trans from a 94-95.

Assuming, of course, you are talking automatics?

 

along with that, also guessing its a 2wd? the 94 has a speed sensor in the trans, the 01 does not have a speed sensor in the trans, the 01 uses a speed sensor in the rear axle

 

Ok but there's a sensor with 2 wires almost at the back of the transmission what is That its on the driver side what does it do

 

Yes its a automatic the only thing doesn't do is go into 3 gear the first 2 gears shift just fine

 

What do you have hooked to the 8 pin connector on the 01 tranny?

Dave

 

could one hook up manual switches?

 

The 94 has a hydraulic controlled governor.
The 01 is electronic controlled thru the the 8 pin connector.
Sounds like he has no governor working.

Dave

 

I had a friend wire it up I will get under and look at wires and find out what wiresare hooked I know he said the 2 purple wires are not Hooked up

 

You can't run switches for the trans. The governor solenoid is a 'variable force' solenoid, regulated by the PCM on newer trucks. A switch just isn't going to cut it. You need a 46RH trans, otherwise, two gears is all you are going to get. No speedo, no cruise, and a selection of other problems.