1993 Ram 350 trans problem

1993 dodge Ram 350. 360 engine with overdrive transmission. When the weather get cold, about 35 degrees or colder and I start the engine I put it in reverse and it stalls out the engine. Once I drive it and the trans warms up it works fine. Never have any problems when the weather is warm. This very confusing and frustrating.

It stalls only in reverse or in drive also?

Yes only in reverse. I tried it in 1st 2nd and drive when cold and it is fine only in reverse. The engine sputters and stalls out like it is an electrical issue.

Look for a 2-wire connector on the front half of the tranny (don't remember which side). Follow the 2 wires and check to see if they are chaffed anywhere and rubbing against ground.