Below is a link to the USDM CRX Manuals:
1991 Factory Service Manual
1990 Factory Electrical Service Manual - this is only a partial copy of the manual but using it along with the Electrical portion of the Factory Service Manual will give you about everything you need
Just download the files and then click on the Index and everything will pop up
Just remember the 1988 and 1989 cars are a little different in some aspects.
https://www.dropbox.com/sh/gbbtgm2zewrv ... KndKa?dl=0