job of the fused link from battery to junction box

[rede30]

What is the job of the fused wire that runs along the main power wire from the battery to the power junction?

[jlevie]

That wire provides power to the engine injection electronics. It is run as a separate circuit from the battery to avoid the voltage drop that occurs on the main cable when starting the engine.

[mikeedler]

that wire tends to go bad (corrosion) pretty often too.