I have a couple 12v ignition ports available on my fuse panel under the dash that provides near full power while cranking (& full on run). These ports provide No power on accessory mode or while the key is out.

Only issue, they are NOT fused (single wire input, 80s GM style), so I will need to run an 'in-line' fuse.
What size amp fuse should I run?


Thanks,
Tabz