alright heres the thing, i swapped a 350 from an 87 into my 91, the wiring is obviously different so as of right now i have a hacked up harness.. i got my hands on a 91 350 harness + cpu and the needed sensors to go along with it
before i put the new harness in it i figured i would go through make life a little easier and lable all the connectors so it will go a little smoother...
this is a link to my yahoo photo's i have the picture of the connectors and which connector i think/know it is, there are a couple i am unsure of and if someone would take a look and let me know how i did and what is wrong/right it would be great!

http://new.photos.yahoo.com/quitdotc...60762393982226

thanks in advance!

 

The red clasp connector is an emissions connector...

 

so in the pictures its harness10 picture?? and what does it connect to?
thanks!

 

Just for starters pic 12 is dist. to coil. pic 11 looks like 4 pin goes to dist. and 2 pin for egr. Pic 10 looks like a purge solenoid connector. Pic 9 the white and green look like A.I.R injection connectors and the other is the low pressure A/C connector side of accumulator. Pic 8 looks like power feeds I think to the HVAC and other stuff. Need better pic of 5 with wires going to the connector. Pic 6 grounds and IAT sensor should have a short harness going to bottom of intake. Pic 4 white is colored single wire looks like oil pressure for the gauge. Pic 3 is power for the coil. Pic 2 ESC should be blue wire. Mike

 

in pic 5, the one labled power feed has a orange and red wire to it, size 10gauge i believe or 12, then the one labled generator connector is a red #10gauge wire and a black #12gauge wire, and then the one labled coolant temp sensor is #12gauge possibly #14gauge color is tan with white stripe

and what do you mean about picture 6? grounds is the obvious one.. but ur saying the connector is the iat sensor? or it should have something else along with it? confuzed on that part
thanks a lot mike for your help =D

uploaded the new lables.. didnt delete the old questions off.. but heres the new link incase the old doesnt work, if they dont show up right away just click refresh and it loads fine

http://new.photos.yahoo.com/quitdotc...60762393982226

 

In pic 4 is the white colored connector. Does it have a green wire? If so That should be the coolant temp wire for the gauge. In pic 5 the one labeled coolant temp is the brake pressure offset sensor on the prop. valve. In pic 6 what I was saying is that there should be a short harness that the 2 pin connector plugs into and then goes to the IAT sensor. I will look into the power connectors tomorrow. Mike

 

alright i got the connector for the 2 pin connector in a little bag! and in pic 4 the brokenish white connector with the ???? lable is a green wire so thats the coolant temp wire for the gauge

 

pic #1 - the little 2-wire connector is not a fan switch connector. If the wire color is yellow and black, then it's the Coolant Temp Sensor (CTS) connector. Or the color might be brown and black. But yours looks like it's tan. That would point to the Intake Air Temp sensor which should not be on this side of the harness, it should be on the back side.

pic #2 - blue wire is for the knock sensor
- grey wire is for the fan switch

pic #3 - yes, coil

pic #4 - yes, the single wire is for O2

pic #5 - battery power feed is correct
- I cannot identify the round connector, what wire color does it have?

pic #6 - what wire color is on the round single-wire connector?

pic #7 - correct

pic #8 - correct, this is the blower connector. It connects to a small harness that controls the blower and such. That harness also goes into the cab through a grommed behind the passenger head. I am attaching a picture of what it looks like in that rear passenger side corner.

pic #9 - the two on the right are for the AIR system valves (they both have one pnk/blk wire)
- the black connector (black & green wires) is for the A/C compressor clutch

pic #10 - pnk/blk and grn/yel is a canister purge solenoid valve connector

pic #11 - the two-wire connector is for the Intake Air Temp sensor (on the back of underside of upper plenum)

pic #12 - the top end goes to the coil and the bottom end plugs into the side of the distributor

pic #13 - is that for a different year A/C compressor?

That's all I got, hope it helps.
Lou

 

pic 1, yes its yellow and black so its the coolant temp sensor connector

pic 4, the small yellowish connector what is that? its a single gren wire

pic 5, wire is tan with white stripe

pic 6, 2 prong connector is grey wire and pink wire/black strip and the two connectors with the round gromets are black and black/white strip

pic 10 is pink with white strip and green with black strip

pic 13 has to be spliced back into the harness

helps a lot!
thanks lou

 

pic 4 is the coolant temp sender for the gauge.

pic 5 connects to the prop. valve for the brakes.

pic 6 Is the E.G.R. I got that one wrong before. The other two are grounds connenct them to the back of the head.

pic 10 Is cannister purge.

pic 13 Looks like a A/C clutch connector for newer GM cars.

Mike

 

I think Mike's right, even on point #6. The gry and pnk/blk should be the EGR solenoid (it comes right out of the thick harness behind the intake).

Lou

 

pic 4 - is that the right lable for the other connector? its the fuel pump/oil pressure switch connector?

pic 6 - yes the connector comes right out of the thick harness behind the intake! EGR Solenoid Connector!

pic 9 - the small all black connector is a green wire and a light blue wire is it still for the ac compresser clutch? and the other 2 is there specific spots for those 2 or it doesnt matter which one plugs in which AIR system valve spot?(the green connector is brown with pnk/black strip and the white is a black/pnk stripe and a pink/black strip)

pic 10 - also never got answer on if the lable for distributor is correct?

and thats everything! wow fun! lol learn something new everyday
thanks for your help guys

 

pic 4 - not sure of the official name but this connects to the combo-sender that contains oil pressure sensor (for your dash gauge) and an oil pressure switch (for the fuel pump). The switch merely provides backup power for the fuel pump just in case there is a problem with the wiring from the ECM. So if your engine is spinning and produces oil pressure, this switch sends voltage to your fuel pump. That's why you can sometimes hear the pump for a second or two after you shut off the engine. It runs until the oil pressure drops off.

pic 9 - oh, my mistake, the wires looked like green and black to me. If it's green and blue, then it's for the A/C High Pressure Switch. Not sure where exactly it is but probably close to or on the compressor.
- the two AIR valve connectors are keyed differently, I believe, so they cannot be hooked up wrong

pic 10 - it's the pnk/blk and grn/yel Canister Purge Solenoid Valve connector

Did you mean your distributor question for pic #11? If so, I have never seen that connector, probably because I have never pulled the distributor on my Z28 before. But it would make sense if it is behind intake.

Hope this helps.
Lou

 

yes pic 11 =D thanks a lot everythings labled now!! w00t

also ill leave the photos in yahoo photo link.. just incase anyone ever needs lables for a 91 Speed Density Wiring Harness, if for some reason its ever not working just pm me, they will be saved on my comp/disks

http://new.photos.yahoo.com/quitdotc...60762393982226