Hard Wiring a Decoder

[BigDaddy]

I am working on 2 locos and threads at once (probably a bad idea) and got confused.

This is a GP9 not a 7 and was a recent Ebay purchase. It says so on the board.

My Stewart F3’s, different thread, have a larger circuit board, much like the Atlas DC circuit boards from long time ago.

[Lonnie_Utah]

There definitely are at least 2 kinds of heat shrink. The shiny type is indeed hard and inflexible. Works best in the larger sizes for large wires. The small diameter stuff I use for decoders is a dull rubbery color and very flexible.

I’m fortunate enough to have an electronics supplier here that has colored shrink wrap in a multitude of colors and sizes. Usually when I do a decoder install, I try to remove all the existing wires and use wires and shrink wrap that corresponds to the nmra decoder wire color.