No power to the amp

[The_Councillor 10+ year member]

So today I hooked up my friends new head unit and his amp and then when we turned on the car the power light to the amp wouldn't come on.

Thinking it might just be a bad amp, its a boss, its old, and he got it used, but in case its not

its an 89' deville 4 door and had the factory stereo in it with this wiring

1989 Cadillac Deville Sedan Car Audio Wiring Guide

Car Radio Battery Constant 12v+ Wire: Orange

Car Radio Accessory Switched 12v+ Wire: Yellow

Car Radio Ground Wire: Black

Car Radio Illumination Wire: Gray

Car Stereo Dimmer Wire: Brown

Car Stereo Antenna Trigger Wire: Pink

Car Stereo Amp Trigger Wire: N/A

Car Stereo Amplifier Location: N/A

Car Audio Front Speakers Size: 4″ x 6″ Speakers

Car Audio Front Speakers Location: Dash

Left Front Speaker Positive Wire (+): Tan

Left Front Speaker Negative Wire (-): Gray

Right Front Speaker Positive Wire (+): Light Green

Right Front Speaker Negative Wire (-): Dark Green

Car Audio Rear Speakers Size: 6″ x 9″ Speakers

Car Audio Rear Speakers Location: Rear Deck

Left Rear Speaker Positive Wire (+): Brown

Left Rear Speaker Negative Wire (-): Yellow

Right Rear Speaker Positive Wire (+): Dark Blue

Right Rear Speaker Negative Wire (-): Light Blue

The head unit he bought is a Pioneer DEH 15MP

The head unit turns on ran and static comes through each speaker (not sure where to connect the pink antenna wire from the car to the wiring harness with the pioneer head unit)

And I connected the blue/white from the new head unit to the REM cable running from the amp.

I have the power from the amp to the battery, going through the fuse, have the grounds for both the head unit and amp to bare metal, and even put a new fuse in the amp. But when we turn the key on we still get nothing from the amp...Not sure if the amp itself is bad or if I messed up on the REM cable going to the head unit.

Wiring guide for the head unit says Blue/White "Connect to system control terminal of the power amp or auto-antenna relay control terminal (max. 300 mA 12 V DC)

Should that instead be connected to the "Car Radio Accessory Switched 12v+ Wire: Yellow" coming from the car?

I figured I would ask you guys before undoing the connections on my amp and hooking his up to see if it was just a bad amp or not.

If anyone could shed any light I'd appreciate it

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[The_Councillor 10+ year member]

Ok so I hooked the amp up to my connections and it got power and turned on when my radio turned on.

Then I hooked up his power and ground, bridged a small wire from the Remote terminal to the power and we got power to the amp when the vehicle was off.

Next I took his blue/white from the head unit, it said "remote control" somethin on the sticker and spliced it to the remote wire from the amp and, and it doesn't turn on.

Also changed the fuse for the amp

Anyone know my next step?? Should I try splicing it into a different lead??

 

[Massive spl]

Tap the remote wire into the ignition fuse. It will turn on and off with the car. If that what your problem is

 

[Boomin_tahoe 5,000+ posts]

Some Hu have 2 blue wires from the harness on the back. That can lead to confusion as one is for the remote turn on for aftermarket amps and the other is antenna remote...prob for the antenna that goes up and down when the car is turned on/over.....some vehicle antennas have this feature.

Solid blue= power antenna

blue/white= remote turn on

Sounds like an issue on that wire harness. I would go back and rehook up to what you had before w/o any issues.