Are any of the fuses you are seeing the automotive blade style?
If so, are two of them green (30 amp)?
If yes, is one marked identifiably as reverse polarity protection?
If yes, have you checked it for continuity, not just visually?
This is not likely to be an inline fuse and should not require removal of anything.
I feel 90% sure this is the problem.
Chuck - Sparta, TN
2012 Jay Flight 22FB, 2 x Honda EU2000i
2013 GMC Yukon XL Denali AWD
EDUCATION is what you get when you read the fine print.....
EXPERIENCE is what you get when you don't.