Looking at the wiring diagram, there are 3 fuses all next to each other at the battery.... an 80 amp and 2 60 amp fuses.... cable colours are red to the 80, red/blue trace to the 60 in the middle and red to the 60 next to that..
these are the fusible link wires that Jim has sorted.
i replaced my whole loom recently, and also chopped out these fusible links that were looking manky (they get hot and distort the insulation so that moisture can go in there and corrode the wires easily), and replaced them with proper blade fuses.
if you can avoid low voltage problems, you could avoid expensive engine damage through weak fuel pump, injectors, spark.
this is a mod well worth doing now on these old looms, so big up to Jim Green and everyone who helped him sort it out and for posting it up on here for others to share
