Please help, harness is missing two pins

[udmm54 10+ year member]

My metra harness is missing A03 and A04. are these usually not needed? thanks. btw this is a reverse harness going into the factory radio

A01: Yellow/Green: Radio Switch

A02: Yellow/Red: ACC (Main stereo power supply)

A03: Green/Red: Radio Remote Switch

A04: Red/White: (Security Input)

A05: Pink: Right Rear Speaker +

A06: Blue/White: Left Rear Speaker +

A07: Green/Yellow: Front Passenger's Door Speaker +, Right Tweeter +

A08: Green/Black: Driver Door Speaker +, Left Tweeter +

A09: Red/Black: Lights-on Signal

A10: White/Green: Constant Power

A11: Brown: Radio Remote Switch Ground

A12: Not Used

A13: Not Used

A14: Not Used

A15: Blue/Yellow: Right Rear Speaker -

A16: Blue/Black: Left Rear Speaker -

A17: Gray: Front Passenger Door Speaker -, Right Tweeter -

A18: Light Green: Driver Door Speaker -, Left Tweeter -

A19: Red: Dash Lights Brightness Controller

A20: Black: Ground

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[pentavolvo 10+ year member]

all depends what car, odds are u need em

 

[BeAlLsTaR13 10+ year member]

your fine, first one is basically amp turn on (im assuming) and the second would be for the chimes and such?

 

[Mike465 10+ year member]

What kind of car is it?

 

[udmm54 10+ year member]

the car is a 2006 accord

 

[udmm54 10+ year member]

dont buy metra. they falsely adverstise

 

[Mike465 10+ year member]

dont buy metra. they falsely adverstise

Dude, you probley orderd the wrong harness for your car. Metra makes so good stuff. The only thing I do not like they make is smart harnesses because the unpin in no time.

Second there is a reason why those pins are blank on Metra harness. The A04 pin (Security Input) is not needed for an aftermarket radio. It is the status light on the factory radio to indacate that the factory alarm is armed and that if the raido is stolen it has to have a code entered in for it to work. A03 is for factory steering wheel controls.