A/C & Radio Electrical Issue (I think)

[TX '90 ZR1]

Drove the car yesterday and everything was working fine. Needed to move car in shop today and noticed that the AC controller had no green lights on, the display had a short dash followed by 2 longer ones. The radio is not coming on either. Antenna not going up. SVC shows when turning radio on, but nothing else except the time which is stuck on 01:00.
By using the fan buttons on AC controller can get into diagnostic mode. No codes showing. Checked all fuses as good.
Is there a common wiring connector that could be affecting these?
Any ideas would be appreciated.
:cheers:

[GOLDCYLON]

How is the Battery condition? C4s do wierd electrical things with bad cells etc.

[S.hafsmo]

When I had this issue, it was caused by a faulty AC programmer. I did however not have a faulty radio, only the three dashes in the AC-screen. They share wiring, so it could be a common problem somewhere.

[TX '90 ZR1]

Thanks Guys.
The battery is about a year old. AC/Delco. Believe it's good, but will do a load test to be sure.
I'm going to check the circuits that are common to both. Nearly seems something is not making a good connection somewhere.
I had the dash apart a few months ago getting the radio redone and cleaned the AC control buttons while I had it out. Maybe something got shook loose?
Other suggestions are welcome and appreciated.
Thanks again,
:cheers:

[TX '90 ZR1]

FOUND IT !!
Started taking things apart in reverse order from the last time I had pieces off of the dash. Testing operation as I go.
Come to find out, one of the wires going to the ALDL had somehow gotten pinched under a Tinnerman nut on the drivers side lower trim panel.
When I started removing the screw from this location, everything went to normal. Re-routed wire and all is good.
Don't ask what this wire had to do with the radio and AC. I've no clue.
A plan and a little luck fixes a lot of things!!
;):dancing:cheers:

[GOLDCYLON]

FOUND IT !!
Started taking things apart in reverse order from the last time I had pieces off of the dash. Testing operation as I go.
Come to find out, one of the wires going to the ALDL had somehow gotten pinched under a Tinnerman nut on the drivers side lower trim panel.
When I started removing the screw from this location, everything went to normal. Re-routed wire and all is good.
Don't ask what this wire had to do with the radio and AC. I've no clue.
A plan and a little luck fixes a lot of things!!
;):dancing:cheers:



Good news you found it! Thanks for closing the problem out to help the next forum mate !!!

[TX '90 ZR1]

Good news you found it! Thanks for closing the problem out to help the next forum mate !!!

I receive a lot of help here. Try to repay when I can.:)

[Paul Workman]

Good news you found it! Thanks for closing the problem out to help the next forum mate !!!

:thumbsup: