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'12 Mazda 3 HB skyactive, w/o any electrical upgrades

I am wanting to 'add a circuit' instead of tapping into the wires indicated in the homelink mirror instructions. Also, I prefer to use a unused space instead of one already in use.

Is there anyone who is willing to divulge what space # they used (or would use) in adding both a constant and accessory circuit? What size fuse? I have read that the mirror draws only 1/3 of an amp, yet I read to use a 5 amp fuse which seems to be too high.

My preliminary test w/ voltmeter shows only the #33 space is available as a constant source.

Obviously, my level of knowledge is minimal....Any constructive feedback for me to accomplish my task will be appreciated.

Thanks in advance.
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