I'm wondering if you've got a dicky ignition switch. I'm assuming you have the combined ignition and lighting switch (Lucas PRS3 )
I've had issues with these on the +4 racers
They drive you scatty with intermittent faults.
Replacement replica parts are available and are of good quality
Check inputs and outputs using a multimeter with the switch still in the car
If you have power coming in but none coming out, then there's your problem...
Simon @ SiFab.co.uk
