Head unit power

[Brianrzr]

I have finally figured out how to set stations and time on my Clarion CMD 6. Problem is when I turn my battery switch off, I lose all presets and time. Is it wise to connect to constant power source like the bilge. I do realize there will be a continuous draw on battery. I use the boat nearly everyday.

[VladM]

Some headunits have a separate connector that powers only memory. Connecting that shall be fine. You can measure how much it consumes.

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[chpthril]

Brian,

If you look close at the amps' power cables, you should see one of them has a yellow wire wire piggybacked in with the its main red B+ cable. This is the head unit's MEM/B+. You can relocate it direct to the battery in order to retain memory. You just need to make sure you connect it to the same battery B+ as the amps' B+ draw from. If it gets connected to the main cranking battery, you will likely end up with noise. Just make sure to fuse it as well.

[Brianrzr]

Thanks for your help.