Thanks to the internet I have been researching how to make Peco code 55 N scale points DCC friendly, there are plenty of wiring diagrams but not many photos so I have put some together to show how dummies like me have done it.
The photo above shows where I have cut the rails to isolate the frog from the switch rails you need to do this because the switch rails pass power to the frog depending on which way the rails are set.
To make the cut as small as possible I made it with a fine saw.
To make sure electrical contact to the switch rails is not reliant on them touching the outside main rails I cut some of the plastic away from the bottom and soldered some jumper wires between the two.
The jumpers are in place and I have soldered a green wire to the frog so the polarity to it can be changed.