Head unit that saves presets

**PDQH2O** · 12-09-2008, 10:04 PM

Does anyone make a headunit that saves the channel presets while the batteries are switched off? The next best solution might be one with IPod input (3.5mm), whihc I know are fairly common. Ideal unit would have both the input AND non-volatile memory. Any ideas?

**phebus** · 12-10-2008, 06:22 AM

Most units have a memory wire that is wired to constant hot in addition to the power wire. They draw very little current and usually aren't a concern for battery draw down. You do have to run the wire directly to battery hot which usually means pulling a wire, as everything at the helm usually goes through the Perko.

**Beer:30** · 12-10-2008, 08:07 AM

I second that.

Plus, most later setups are now configured with an on-board battery maintainer. When the boat gets parked, it gets plugged in and the batteries are maintained - regardless of small power draw(s). Better for the batteries, since sitting is what causes sulfating. I haven't turned off the batts in years.

**NiceGuyEddie** · 12-10-2008, 10:58 AM

I 3rd that...

I ran a 14gauge power wire to the head so I wouldnt have to re-program my XM stations every other weekend.

**AZREDNECK** · 12-11-2008, 11:23 AM

the only problem that i have encountered with running a mem wire, is that if you have your amps and head unit on seperate bats you could get some system noise. ie: popping, whisling and so on.

**PDQH2O** · 12-11-2008, 08:38 PM

Good input, all. I hadn't thought about running a separate hot line to the batteries - not that smart I guess. That would be a much simpler solution.

I am seriously considering the purchase of a new head unit, one with Aux. input for the IPod, etc., so now is a perfect time to string a fused wire to the head unit.

Thanks for the help.

**Outdrive1** · 12-17-2008, 08:04 PM

Originally Posted by AZREDNECK

the only problem that i have encountered with running a mem wire, is that if you have your amps and head unit on seperate bats you could get some system noise. ie: popping, whisling and so on.

I've seen some boats with twins, and with separate batteries and switches without a ground wire running from one motor to the other. I usually run a wire from bell housing to bell housing to "connect" the systems together. When both switches are on all, the positives are connected. It must be an over site during rigging to omit the ground, or maybe it's done on purpose? I'm not sure, but to me I don't see any detriment to having the grounds tied together.

**AZREDNECK** · 12-24-2008, 12:50 PM

Originally Posted by Outdrive1

I've seen some boats with twins, and with separate batteries and switches without a ground wire running from one motor to the other. I usually run a wire from bell housing to bell housing to "connect" the systems together. When both switches are on all, the positives are connected. It must be an over site during rigging to omit the ground, or maybe it's done on purpose? I'm not sure, but to me I don't see any detriment to having the grounds tied together.

there can be interference if the radio is not getting its power from the same battery as the amps. same goes to amps to seperate batteries.

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Head unit that saves presets

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