Computer on 88 buick

Not much on the codes, but lots on resetting.

https://www.google.com/search?q=1993+Buick+Lesabre+PCM+reset+code+88+reset

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Question edited for clarity and typo.

1994 Oldsmobile 88 Car Stereo Wire Colors and Locations

https://www.the12volt.com > installbay > stereodetail
1994 Oldsmobile 88 Stereo Wiring. Constant 12V+, Orange. Switched 12V+, Yellow. Ground, Black. Illumination, Gray. Dimmer, Brown. Antenna Trigger, Pink.

It should be in one of the the valve covers

try under the dash above the steering colum

Try looking behind the glove box.

The engine control computer is: Front seating area, passenger side, under dash, mounted behind kick panel

datalink connector location, under your panel board at kneebols,,with 16 pins sometimes have a cover.

Hi! I have enclosed 3 trouble trees for you. The code being stored is a quad driver error. Quad(which means 4)drivers control up to 4 things. They are located in the engine control module. They provide ground for the items that they control. This could mean a component that the driver controls could be bad or the computer itself. Hope this helps you!

Well just guessing here that you think it's a fuse, or fuse's because you're looking for the fuse panel.
I can almost certainly say it's not the fuses, as each of the problems you've described are run off separate fuses. Unless this car was just bought, The fuses may of been removed. If this is the case, I BELIEVE the fuse panel in this car is located on the left hand side, between the door and the dash.

are you talking about the button,bulb,relay?