I am searching for my ALDL on my 1989 sword custom 3.8 L. I finally found this 12 point connector....however to me it looks almost like a part of the HVAC system since it's so close to the vacuum climate control unit....?

This shot only shows 4 electrical connectors active....


I didn't get any time to run any electrical check w/ A-B short or multimeter because the wife needed to run....

The Haynes manual doesn't show any wire location or description w/the ALDL....& the connector didn't appear to have any description or marking showing A thru M.....

Haynes also mentions that some some vehicles (Buick manual) don't have a terminal B present in the connector....(reads: requires a scan tool or go to the dealer)

Anyone know what the 4 electrical wires connect to from the 12 point terminal ALDL....? It might be A, B, M & F...? Terminal twisted to see the bottom view...


Side view...normal vertical position view...not attached...


Your thoughts & experiences will be greatly appreciated...