I'm trying to piece my series diesel back together. My steering column has a cover over the hole for the lock. Is there somewhere else for the switch on a s3? (it's a bit of a 2a/3 mixture)
The diesel switch has different terminals as the switch has different settings. The diesel has another setting in be tween 'on' and 'start' for the glow plugs
You can use a petrol ignition switch on a diesel with a bit of ingenuity, diesel switches are stupid expensive but with a multimeter you can work out which terminals you need and just wire the glow plugs up to a separate switch......I have the relay from an old disco on mine wired to a toggle switch.