Hi Matt,

Sounds like you're working from the Mitchell drawings.

"Taped off the old wire for the clock so as not to damage anything with it just hanging there and then tucked it away in a wire bundle. "

Huh?

The pink/white is as you describe it, the only such wire with a male faston. Terminal 235 on the back of the cluster is a female. The only female. So, no, you can't get them mixed up without some hanky panky.

The lamp test should be available from both ECU and ICU. They are wired together (wire or-ed in EE parlance) so the lack of lamp test on CEL is doubly concerning. I'd even go so far as to suspect a PO hiding a CEL from you (or the Maryland Vehicle Emissions Inspection Program) by unpinning or cutting at the ECU, ICU or both. Yes, a conspiracy theory actually holds more water here than the theory Mitchell copied the drawings incorrectly.

I would not trust my color receptors to distinguish 25-year-old red dye from 25-year-old pink dye. In fact, that I am male, restricts me to knowing only those 12 colors you find on resistors -- you know the rhyme I'm sure.

If you never see the CEL come on, you need to chase this down, because some day it will come back to bite whomever drives that '91.

Here are some (slightly) better maps.




--
Art Benstein near Baltimore

A chicken crossing the road is poultry in motion.