M9 is the location in the fuse box there you can insert the fuse tap.
A fuse tap is not another in line fuse, it simply uses the vehicles fuse box to get power, just like like if you were to tap into the cigarette lighter, but without the need and without piggy backing on another circuit. Fuse m9 only receives power when the key is on. Any auto parts sure should have these taps available.
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