Actually, no worries mate! Just reconnect to the male plug laying by the spark oscillator.
If the radio crackles afterwards then your seat sensitometer is fried. Just get a new one at the dealer or make your own with a couple of those wires and the plastic clip from the windshield wiper replacement.
It works pretty good but try not to get into the rig with wet shoes or an analog watch, those sparks tingle like crazy, but a little juice aint' gonna kill ya.
I hope this helps.