I am on the side of the ignition switch and main battery to chassis earth as your lights and gauges were effected at the same time, if it was just the engine cutting in and out I would look at the main engine earth and coil wiring. It would seem that the power wire to the ignition switch could be loose or as suggested above there is a loose part within the switch, one test is to bypass the ignition switch and see if things work and run better.
Last edited by britmog; 24/06/23 07:58 PM.
