twincamman>
Ive changed the ground to neg on the chassis and that should not effect the fuses --but something is wrong ---any ideas would be helpful
If all the wires on the previous +ve terminal now connect to ground and/or the negative terminal then everything ought to be ok unless you have some DPO wiring
The tacho and the radio are the usual problems, the coil terminals need swapping too and the dynamo repolarising - (remove the F lead and briefly touch for a few seconds a live feed direct to the dynamo)
But once the harness starts going then its really time to rip it all out before anything big happens as fire can quickly start. A master switch is ok (got one fitted on my sprint) but by then its too late and damage can extend all over especially if you have dodgy earths.
I once rewired everything in the engine bay of a mini in a pouring rainstorm (before I had RAC Recovery) in around a hour using a cheap crimp tool, a few metres of wiring (all of one colour!) and a few crimps. It was enough to get home with the wipers, heater and lights and get a charge in the battery and bits of the reworking were on the car when I sold it a few years later. It was fortunate that I had the wiring diagram with me though as almost everything had gone to Lucas heaven before I managed to get the battery terminal off. The fault was traced to the original starter button solenoid feed "live" on the floor (this was a 1961 850) being removed and taped back when the car was "upgraded" some years previously to ignition key start.