More 86/87 wiring diagram questions for the experts

[PaulRV6]

I am trying to check some wiring connections on my engine harness (which is outside the car) going from the bulkhead spade connector to the various connections on the sensors and ecm. I may be confused about going from the bulkhead connector to the ecm (A6) or CCCI (P), I don't have continuity with the pnk/blk wire which is highlited. I thought the bulkhead plugged into the fusebox and that is where all the power would come from but maybe not. I don't know what the "F" means and the S457 connector but maybe thats where things are missing. I am hoping someone can clarify this for me and give me a better understanding of the connector designations. BTW I also copied the bulkhead connection layout from the caspers website. Also if I go from the D4 connection which is labeled on the bulkhead in have continuity to the "M" term on the CCCI.
Sorry for the length but not sure how else to ask. Thanks

 

[grass doctor]

@salvageV6 ...is the guru ...

 

[GNVenom]

That power feed for the ignition module isn't in the C100 bulkhead connector, it's in the C437 (white) connector. The CCCI module power is the only pink/black feed that's not at the large bulkhead.

 

[PaulRV6]

Ok so where's the C437 white connector and where does that go? I don't have anything showing that connector? Thank you

 

[pacecarta]

the connector is listing wire terminals by row column , so F- 4 is for powermaster and fan delay relay ,(only wire on the F row )
if your dash harness is from an 84 then there wont be power on that wire

heres the fuseblock connector diagram for 87 turbo

 

[PaulRV6]

Ok so if not all the 12v power comes from the C100 harness connectors where else can I find where it comes from, ie. C437? What shows it? Thanks

 

[GNVenom]

The C437 connector is near the ECM connections down at the passenger kick panel area. It's a double sided white connector and is plugged into one or two black connectors that go to the dash wiring.

 

[salvageV6]

Drop the glove box it's right behind it. The one with the fuzz on it. The black tape is on the pink wire I had to bypass that connector the car kept dying on me when it went intermittent, fun times....

 

[salvageV6]

If the harness is out of the car it's the fuzzy one near the ECM connectors.

 

[pacecarta]

c437

 

[PaulRV6]

That is awesome, where did you find that. I appreciate the help guys. Hopefully that will answer all my questions.
Paul

 

[PaulRV6]

Just wondering, looking at the connector layout it shows a barometric press sensor, I didn't think the GN had those? Is that for a different VIN?

 

[salvageV6]

Same diagram referenced for Turbo wiring.

 

['87 Turbo "T"]

That is awesome, where did you find that. I appreciate the help guys. Hopefully that will answer all my questions.
Paul

I’d invest in an FSM(free). You can search on here for the links.

Not sure how exact il’ll be do an ‘84, but it’ll give ya a lot to work with.

There are section specific chapters so you can go to the section ya need. Just use Control “F”(if using Winders) & type in what ya need in each section.