i just picked up a 92 maro and there is this spot for this big relay type thing under the dash has atleast a have dozen pins on it. i would like to know what that is for. i know its a big black relay type thing because i just went to take out a dash and noticed it on that car but was missing on mine. it would be above the gas pedal to the right a lil bit where thhere is this little fuse block any help is appreciated

 

Maybe It's the ALDL - the data link for the computer - there's nothing that gets plugged in.

Read: https://www.thirdgen.org/service-eng...ht-error-codes

and http://www.austinthirdgen.org/index.php?pid=27

Or it could be the connector for the buzzer - does the buzzer sound when you leave the lights on and key out?

 

not the ald. didnt even think about the buzzer

 

Definately sounds like the buzzer and two other relays for the internal wiring.