How do I bench test a head unit for power?

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Feb 24, 2003 | 07:42 PM

gpagaduan

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From: CA

How do I bench test a head unit for power?

I can't get it to power up through the car. (And I don't have another car to test with) I know for certain that the power wires have power and that the thing was grounded.

Feb 24, 2003 | 09:02 PM

brianw21

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From: Boise ID

Re: How do I bench test a head unit for power? (gpagaduan)

There are three wires that need to be connected to power up a head unit.

1. +12v
2. Switched 12v (Accesory)
3. Ground

Hook those up to a spare battery, or pop the hood and use jumper cables. If you have a spare PC power supply you could use that as well.

Then connect the speaker wires to a spare speaker, or RCA outs to a home stereo and away you go.

If you have a battery charger that would work as well.

-BW

Feb 25, 2003 | 01:19 AM

gpagaduan

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From: CA

Re: How do I bench test a head unit for power? (brianw21)

Quote:

I don't have a spare battery. If I pop the hood and connect directly to the battery via jumper cables, do I connect both the +12v and the accessory wire to the positive post of the battery? (and ground to the frame, of course)

Feb 26, 2003 | 01:34 AM

Monster231

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From: Chicago il

Re: How do I bench test a head unit for power? (gpagaduan)

that would work, but put the negative to your battereis negative as well.

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