I picked up.this 84 berlinetta star ship for 800$. Got all the lights and wipers working. Just cant figure out why blower motor and hvac isn't working. Is there another control module for it? I have 2 large plugs not plugged into anything by hvac box.
also where does the light control module mount? Is it behind the dash and can't be seen without pulling dash? Any pics and advice is appreciated. Thx


The plugs that dont go anywhere.

 

Figured it out, has no ac compressor, so it wasn't getting a ground. Also control panel connector was dirty.

 

light control module piggybacks to the ECM. it'll attached with screws on each side.

 

Perfect thank you. Do I have to pull the dash? Or can ai get to it underneath? I tried and it was very tight.
Also do i need the ecm to run hvac or any of the gauges? I plan on doing a 5.3/4l60e swap. The car came with like 3 ecms but none plug into the plugs that are hanging.unless they are other plugs up under dash.

 

the ecm slides up and, I think, two screws hold it up. remove the screws and you can slide it down, attach the LCM and slide it back up to mount

I wouldn't be surprised though if it's missing. might be a reason your LCM is hanging there and those plugs aren't connected