[Roadsters] 67.5 1600 electrical issues

[Graeme]

STEP 2: You can jumper the ammeter with wire (BAD IDEA) or a 30A fuse (GOOD
IDEA), or replace the ammeter.

Bridging the ammeter terminals with wire is not a problem.
The ammeter is a series connected gauge so it can be substituted with wire.
Providing the gauge wires are either connected together or the gauge is
bridged with wire of a suitable rating, the ammeter can be bypassed quite
safely.
A fuse at this location is not needed.
It is better located at the alternator output terminal, so it can protect
the car wiring from excess current.