I am installing a new AFI dual horn on my 242LS 1988 and am having a wiring issue. The dual horn says it draws 6 amps. I have two gray 2 strand factory wires coming out of the side of the boat where the horn goes. The horn itself has the same two sets of wires. I spliced them all back and I connected them all and only one side of the horn works at one time. When I hold the horn wires direct to the battery, both sides work fine. I noticed that the Marinco (AFI) instructions suggest a 10 amp fuse in the middle. The ETA fuse from Formula is a standard 8 amp for the horn. Could this be negatively impacting the horn performance? Can I safely use a 10amp ETA in the 8 amp slot for the horn with no impact and will both horns work?

Where can I buy more ETA fuses??

ETA breakers can be kinda tough to find, only luck i had was used aircraft salvage yards. Google used aircraft parts and you will come up with some. They are used excusively in airplanes.

Thanks! Anyone have any advice on the horn issue??