What’s the best way to have power feeder wires to peco code 75 ho track other than soldering. Are there any rail joiners with feeder wires that would fit this track? Or any other suggestions.
Conducting electricity through a mechanical joint will always become unreliable at sometime in the future. It can be weeks or years, but it will happen. Soldering is the most reliable way of attaching feeders to track.
Just think about the rail joiner that has a wire attached to it. It slides on both pieces of track. At some later time, you will ballast the track. That introduces water and glue to the joint. That in turn is going to introduce corrosion to the joint. (Corrosion on brass or nickel silver is the equivalent of rust on steel.) Corrosion does not conduct electricity.