- Your dealer.
or
- Pull the breaker and check the manufacturer info on it - could be Blue Seas. Source it from any marine retailer. EDIT: Forgot to mention - Carling is another major manufacturer often used. But there will be a tag on the breaker to tell you exactly.
2004 420 Sedan Bridge
GHS Hydraulic Lift
11' Walker Bay, 30hp
Engines
Cummins 6CTA 8.3M
Just added one … mine is Carling and I purchased from Allied Electronics. You have a choice of fuse levels, I needed 15a for my application, they have others.