I need the wiring diagram for a ac delco amplifier #16257124 which i think came out of a 1999 buick park ave. thanks

copy and paste
https://fuse-box.info/buick/buick-park-avenue-1997-2005-fuses-and-relays

https://www.autogenius.info/buick-park-avenue-1998-1999-fuse-box-diagram/

The service and repair manual with wiring diagram and pictures will help you to fix the problem on your own easily and you will get the manual from the given link https://toolsnyou.com

fixya site does not do wiring diagrams
the diagrams are all in the workshop manual available from any auto parts shop

Go here for wiring diagrams of this and the other systems of the car. I think you will find you have a defective fuel pump. http://bbbind.com/free_tsb.html

I found this, w/amplifier.
Don't know about part number? Found this info in my database. If not factory set-up, doubt if this wiring will help. If you can't read it, maybe you can hit control plus to enlarge.

A bad injector will cause a misfire. You need to replace it and see if the issue is corrected.

Make a diagram of how the belt is on the motor,
then cut it off & move on to the next item you have to do

On this website you find ruse box diagram and description for Buick Park Avenue (1997 and 1999)

Buick Park Avenue 1996 1997 fuse box diagram CARKNOWLEDGE

http://www.carknowledge.info/buick-park-avenue-1998-1999-fuse-box-diagram

the chances of this is slim I checked the Part numbers of the 2 motors and they are different possibly the plastic fans attach differently, and can cause problems with the depth or width the mounting holes may not even match up ...sorry I dont have better news..97 park ave motor GM part # 88960339 and AC delco # 15-8959 And the 95 century numbers are GM #52498870 AC delco # 15-8535 Hope these help...

*** 91 park ave with delco bose =

black = ground
dark green = lights on input
grey = panel lights
pink = on input
yellow = power input
orange = battery power input

nca = shield ground
tan = left fr spkr +
orange/black = left & right spkr -neg
lite green = right fr spkr +

nca = shield ground
dark blue = right rear spkr +
dark green/yellow = right & left spkr - neg
brown = left rear spkr +

purple/white = display dim output
pink = vehicle speed input
-----------------------------------------------------------------------
**** 91 park ave without delco bose =

purple/white = display dim output
pink = vehicle speed input

grey = left front - neg
tan = left front + pos
dark green = right front - neg
light green = right front + pos

black = ground
dark green = display dim signal
grey = panel lights
pink = power antanna
yellow = ign input
orange = battery power
light blue = right rear - neg
dark blue = right rear + pos
yellow = left rear - neg
brown = left rear + pos .

there YA go