60A in-line fuse blowing

[sereino11]

I’m installing my batteries for the season and the in-line 60A fuse blows instantly when I attach the red positive cable... any idea why? I’m hooking the red 1st then black

[88 PS190]

Either way there is an instant >60 amp load on it.

Are you saying you put the first battery in, attached the red and POP even with no negative applied?

[waterskier360]

Measure how my ohms between Red and Black.
If it comes back near zero ohms you have a dead short.
It is acting like a dead short, if its tripping instantly.
Whats the setup , do you have dual batteries ?

[sereino11]

The darn battery had the red + cap on the wrong terminal... therefore I had cables crossed. Thanks for the help!