I have an electrical issue with my 1996 Detomaso.
When I turn on the headlight switch - the headlights don’t turn on, and the fuel gauge pins itself to above full mark, and the temperature gauge jumps up to very hot, and the blue full-beam light lights up even though only dip-beam is selected.
But everything works fine with only parking lights on.
Have checked all obvious fuses like gauge fuse, L+R Headlights.
Replaced the combo switch with a spare I had lying around, and get the same behaviour.
Has anyone seen this? Or got any ideas?