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I swapped out my auto PCM with a 99 Dodge Cummins 5 speed PCM, connected the two outer wires from the auto trans NSS to the nv4500 reverse lights switch, ran the black/white tracer center wire up to the CSS, and then grounded the 2nd wire on the CSS to the left side under the dash where there is a common ground point. I'm still using the factory auto instrument cluster and the auto trans PCM wiring harness.
I pulled out my instrument cluster and removed the PRNDL shift indicator and installed the manual trans blank that goes in that spot.
The only issues I have are the seat belt light goes out after starting the motor, but then it comes back on and stays on while the pickup is running. My cruise control works fine like it should, decel, accel, and set, but the cruise light on the dash does not come on now except it does come on when initially turning the key on.
The cruise light worked before the swap, and cruise control itself works after the 5 speed swap, but the light does not light up now on the dash.