Finally got my remote glow to work properly. The pictures might explain more but here goes. There is a 9" piece of solid copper cable to a 30A double pole switch and fitted in line is a 20A fuse. There is then a 22" length of thick multistrand armoured cable with a male Deans plug soldered to the end. On the female Deans plug there is solid copper wire which is connected to the earth and glow harness.
To give me something to hold onto as the plug is put in and out I covered the soldered Deans tags with heat shrink tubing. Then put a large piece around the entire plug only heat sealing it on the body of the plug. Then filled up the void inside with thin epoxy making sure there were no air bubbles and voids at the bottom. This makes a great cover and makes sure you dont pull the wires off the Deans solder tabs.
There is plenty of thick cable for the amps to run through but just enough resistance to stop the plugs glowing too bright. I had to experiment a bit with the lengths of cable.