Where is the ALT idiot light on 1988 burb?

[bucket]

If everything traces the same, it will work just fine. I've seen that style before, but don't recall the exact application.

Not for a clock though. The clock has it's own harness that plugs into the fuse panel.

 

[Frankenchevy]

If a wire passes through the bulkhead, does it go through the fuse block, or do some bypass? 99% sure some bypass…just can’t wrap my head around why I can trace the wire to the bulkhead on the engine bay side, but nothing in the cab.

 

[Frankenchevy]

Besides a something obvious like a pinched wire or a bad bulb, what would cause my check engine light to not illuminate anymore?

Both battery’s negative terminals were disconnected the entire time I was doing work behind the dash and it worked before I pulled it apart.