so basicly im just going to be opening the connection to pin 31 in order to keep it from coming on and closing the connection with a push button would glow the plugs?

could i also cut the wire for pin 31 and solder a wire to it, then bring that solderd wire to the cabin, hook up a switch of some sort, then hook up another piece of wire to the other side of the switch and connect that to the other end of the cut wire which is still plugged into pin 31 on the relay?

basicly just cutting the wire for pin31 and hooking up a switch to that; leaving all the wires plugged into the relay but just splice the switch into 31 that way the relay still will use the ground that pin 31 is hooked up to, but ill be interrupting the ground with a switch.

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1985 mercedes benz 300D turbo diesel
1998 VW GTI VR6
1996 VW GTI 2.0
1999 saab 9-3 turbo
1987 300sdl (sold)