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Constant source of 12v

Old 06-15-2009, 01:14 AM
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Default Constant source of 12v

I got a clock to put into my third hole in the pod and i need a constant 12v even when the car is off. Does anyone know where i could get such wire in the car? I dont want to hack up the fuse box and dont want to plug it right into the battery.
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Old 06-15-2009, 01:17 AM
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One of the power wires to the radio is a constant 12v.
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Old 06-15-2009, 01:38 AM
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Grab a voltage tester and start checking the fuse box under the driver side dash.
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Old 06-15-2009, 01:47 AM
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Originally Posted by levnubhin
One of the power wires to the radio is a constant 12v.
thats what i was thinking.
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Old 06-15-2009, 03:06 AM
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Anyone know how many amps that power wire is rated at?
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Old 06-15-2009, 07:17 AM
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In a '90, the constant-power wire to the radio is blue/red, and it comes from the 10A "Room" fuse. This fuse also supplies keepalive power to the ECU, drives the annoying buzzer that tells you you have inserted the key, powers the rather humorous little devices that Mazda calls interior lights, and on A/T cars, powers the shifter lockout relay.
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