Quote:
Originally Posted by Second Series
... I did not find the schematic for for the gauge cluster pcb. If you know where I can find a diagram of the gauge pcb I would appreciate it. Everything I have seen shows up to the cluster connector with the pins labeled, but there is a lot going on on the circuit board.
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Look in thread hatzie posted for his GMT400 CK Service Manual project.
Open the PDF that is the third manual down in the 1988 section:
1988_ST-375-88-EDM_GM_CK_PICK-UP_TRUCK_ELECTRICAL_DIAGNOSIS_SUPPLEMENT.pdf
The instrument panel information is found here:
Per page numbers in manual 81-0 through 81-15
Per page numbers in the PDF document viewer I us shows page 144 through 159
Page 33-0 in the manual or page 78 in the viewer show some of the DRAC in the instrument panel.
There is not a good complete schematic of the instrument panel anywhere that I have found that shows the DRAC and everything thing else going on in there as you said there is a lot going on in that instrument panel.
I looked at your 47 panel frame swap thread. I saw you mention the DRAC. I have a lot of information saved for recalibrating the DRAC so if want jumper selections let me know.