Quick help ASAP

[NoChance 10+ year member]

Which wires from the HU do I connect to the battery, just to see if it works?

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[Johnny Drama 5,000+ posts]

red and yellow

black=ground

 

[Flipx99 5,000+ posts]

red is when car is on, yellow is constant, I believe.

 

[Johnny Drama 5,000+ posts]

red is when car is on, yellow is constant, I believe.

You will need both to make it work...

 

[Prowler573 5,000+ posts]

You will need both to make it work...

Correct.

Black needs to be connected to ground and both the switched power lead (red) and the constant power lead (yellow) need to be connected to 12v positive for the unit to turn on....if it works since that is what is in question here...