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99-02 Harness Connector Identification

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Old 06-02-2010, 07:03 AM
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Relay in the fuseblock. Call wire goes through one of the C10x connectors then to the fuseblock/relay center
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Old 02-21-2011, 08:54 PM
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I believe 27 and 28 are labeled backwards. The grey plug should be the MAP sensor and the black one should be the cam sensor.
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Old 05-02-2011, 01:43 AM
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Great thread! This should help anyone that is custom making a wiring harness.
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Old 11-27-2011, 09:16 PM
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Default CMP inline connector
I've been searching numerous threads with no luck. There is an inline CMP connector that sits by the #2 injector connector. It's between #33 & #34 connectors on the first post. I would like to eliminate it from my fabricated harness, but I don't know why it's there. Is it used for diagnostics? Any help would be greatly appreciated.

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Old 11-27-2011, 10:48 PM
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Its a holdover from the LSx prototypes that used a timing cover mounted cam sensor. Delphi likely had the harness boards already set before GM changed their mind and the adapter harness moving it rearward was the most economical solution

FWIW, 01-02 cars didnt have that
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Old 11-27-2011, 11:05 PM
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So it looks like it's safe to remove.
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Old 11-28-2011, 05:37 AM
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Yes, cut it out
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Old 03-25-2012, 07:49 AM
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Originally Posted by Skele4door
I'm modding a 99 harness for a friend and can't remember what a couple of connectors are. I noticed that this section gets a lot of questions, so I figured I'd start this thread and we can all populate the list and sticky it for future use. BTW, the connectors marked "(Connector CXXX)" are the ones that you'll use to hook up to your chassis for your speedometer, tach, reverse lights, ignition, etc.

1. Rear O2 (Passenger)
2. Reverse Lights
3. VSS
4. Reverse Lockout
5. Rear O2 (Drivers)
6. CAGS
7. Unneeded ground strap
8. Front O2 (Drivers)
9. Unneeded ground strap
10. Alternator
11. Coolant Temp
12. MAF Sensor
13. TPS
14. IAT
15. IAC
16. Injector (Drivers)
17. EVAP
18. Injector (Drivers)
19. Injector (Drivers)
20.Coil Connector (Drivers)
21. Injector (Drivers)
22. Knock Sensor
23. Ground (Rear Drivers Head)
24. Ground (Rear Drivers Head)
25. Ground (Rear Drivers Head)
26. Oil Pressure
27. Cam Angle Sensor
28. MAP
29. Injector (Passenger)
30. Coil Connector (Passenger)
31. Injector (Passenger)
32. Injector (Passenger)
33. Injector (Passenger)
34. EGR
35. AC Compressor
36. F-body Specific (Connector C230)
37. F-body Specific (Connector C220)
38. AC Pressure
39. Front O2 (Passenger)
40. Oil Level Sensor
41. Starter Trigger Wire
42. Crank Angle Sensor
43. F-body Specific (Connector C101)
44. F-body Specific (Connector C105)
45. F-body Specific (Connector C100)
46. Starter Trigger Wire
47. Red PCM Connector
48. Blue PCM Connector


I know this thread is a little old, but is there a thread like this for the interior harness? Iv'e been looking for a few days and haven't found one yet. I'm deleting the air bag, ac, pointless lighting, ect.. just looking to see what is what now so I know if I need to keep it or not thanks
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Old 03-26-2012, 05:01 PM
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You're flirting with disaster trimming out wires you dont know for sure on. Id be hitting up some schematics over a car forum for something like that, but then again I wouldnt be messing with a dash harness

LT1shoebox has plenty of good diagrams to get you started
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Old 03-29-2012, 03:35 PM
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Originally Posted by Pocket
You're flirting with disaster trimming out wires you dont know for sure on. Id be hitting up some schematics over a car forum for something like that, but then again I wouldnt be messing with a dash harness

LT1shoebox has plenty of good diagrams to get you started
Just doing my research before I go cutting to make sure I dont have to have some of the wires im getting rid of

Is this a member on here I searched it did not find a result under the member list
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Old 03-30-2012, 02:35 AM
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Nice write up and good information...
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Old 04-30-2012, 04:49 PM
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Just want to be clear, #2 connects to the right side of the transmission (6 Spd)?
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Old 05-13-2012, 03:18 PM
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Originally Posted by mbrouder
Just want to be clear, #2 connects to the right side of the transmission (6 Spd)?
Yes sir. About halfway down on the passenger side of the T-56.
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Old 05-14-2012, 02:37 AM
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beside the auto-lockout found on an auto harness, is there anything else different between an A4 harness and an M6 harness?
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Old 05-19-2012, 10:45 PM
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Originally Posted by Rhino
In the spirit of completeness, does anyone know the differences for the 4L60e harness? I'm assuming the vast majority is shared, although there will be a few small differences.
Are you asking the difference in the 4L60E internal harnesses?
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Old 08-16-2012, 02:18 PM
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Old thread but still really useful to lots of people. I just want to reiterate(sp?) that plug 27 and 28 are backwards. The black plug that has the longer leads is the cam sensor and the shorter gray plug is the MAP. If the original poster or mods could edit that it would be helpful. Other than that, great diagram.

-Will
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Old 09-07-2012, 12:07 AM
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On C105 I do not have traction control on my car so the plug is only 4 wires PINK WHITE GREEN and PURPLE

Can some one please tell me were the purple goes it came un pinned or cut or something and can not find it any were

I know pink goes to the fuse box that says ENG SEN 20watt
GREEN AND WHITE go to the plug for the cruse control module
and then there is PURPLE???? Air injection reaction solenoid relay output-coil

its still attracted to the plug its just lose on the side were it should be pinned to a fuse or another wire something someone please help with this
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Old 09-07-2012, 05:23 PM
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Anyone have any info on this at all
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Old 09-08-2012, 05:34 PM
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well I found out I do not need it because I do not have the AIR anymore or egr or anything like that
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Old 03-01-2016, 11:18 AM
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Default plug c100 ,plug
speedometer, tach, reverse lights, ignition, etc.

1. Rear O2 (Passenger)
2. Reverse Lights
3. VSS
4. Reverse Lockout
5. Rear O2 (Drivers)
6. CAGS
7. Unneeded ground strap
8. Front O2 (Drivers)
9. Unneeded ground strap
10. Alternator
11. Coolant Temp
12. MAF Sensor
13. TPS
14. IAT
15. IAC
16. Injector (Drivers)
17. EVAP
18. Injector (Drivers)
19. Injector (Drivers)
20.Coil Connector (Drivers)
21. Injector (Drivers)
22. Knock Sensor
23. Ground (Rear Drivers Head)
24. Ground (Rear Drivers Head)
25. Ground (Rear Drivers Head)
26. Oil Pressure
27. Cam Angle Sensor
28. MAP
29. Injector (Passenger)
30. Coil Connector (Passenger)
31. Injector (Passenger)
32. Injector (Passenger)
33. Injector (Passenger)
34. EGR
35. AC Compressor
36. F-body Specific (Connector C230)
37. F-body Specific (Connector C220)
38. AC Pressure
39. Front O2 (Passenger)
40. Oil Level Sensor
41. Starter Trigger Wire
42. Crank Angle Sensor
43. F-body Specific (Connector C101)
44. F-body Specific (Connector C105)
45. F-body Specific (Connector C100)
46. Starter Trigger Wire
47. Red PCM Connector
48. Blue PCM Connector

[/QUOTE]
What.does each pin in c100 do and which are needed for.Lt1, swap
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