At most any hardware store my guess is your looking for a barbed nipple for a fuel line? Good luck on a manual maybe call discountmarine?
Got them and replied. Let us know what the dealer has to say.
If I were in your position and having those types of issues, I would consider a complete rewiring job and I would re-fuse everything to make sure that
The OEM installed circuit breakers in lieu of fuses. I can't see any logical reason for additional fuse protection if the breakers are all functioning