Car not igniting 20V Omex ECU

[jondee86]

ECU and ignition usually are both energised from the keyswitch, usually
with the ignition power coming from the battery via a relay. If you could
get it to run by taking battery power directly to the coil positive, then it
would seem that you have leakage to ground on the power supply side.
Either between the keyswitch and the relay, or between the relay and the
coil. Melting the wire indicates a high current, more than the coil would
draw on its own. So look for a hot wire (literally) when the key in ON.

Oh... and smoke

Cheers... jondee86