HU Install

Allright So Im putting a headunit in today. No amps at the moment just the HU and speakers. Since my battery is in the back and I need a long power and ground run what gauge wire should I use? Also that type of inline fuse

Thanks

What size fuse is in your head unit?

10

Thanks

I'd install a 10 amp inline fuse, and a 14 AWG wire. If you find that the price difference between 14 and 12 is insignificant, then go with 12.

With 14 AWG, on 15 feet at a full 10 amp draw, you'd see a .77 volt drop at the head unit. Probably more than you'd want, but I doubt your deck will draw anything near 10 amps.

Thanks

I just finished cutting all my holes and mounted the speakers and HU. Took some guts to start drilling. All went well and no Gel Coat Cracks.

Just to make sure I only fuse the ACC hot wire. Not the constant. or should I do both?

Just fuse the Positive (RED, ACC, Hot) wire.

The Ground (constant) wire doesn't need a fuse.

I should rephrase that

I know not the ground. But in essence there are two hot wire the ACC and Constant (Memory etc.) I believe its red and yellow. Do I need a fuse on each of those?

Thanks for your help

no, the memory does not need a fuse -- 12 will be ok for just the HU -- but if and when you go w/ an amp -- go w/ 6 or 8ga wire...

all you have to do is wire it to the fuse block right under the consaul, no need to run your power and ground direct of the battery.

Justin

Thanks I already ran it to the back of the boat. I thought I should not wire into the block tought it sould be dedicated