Fuel pump and fan wiring are a given.

People worry about the voltage on these cars.

The coil does not draw that much power really, although you can get drops with a heavy load, as the system is overloaded as standard.

There becomes a point where it becomes absurd, with virtually the whole car being rewired with individual circuits.

I doubt rewiring the coil will make any difference, it's the substandard ignition system that causes problems, so this has to be in good order.

Martin