Got most of it figured out but have some questions, maybe someone knows. I kinda struck out before so I just followed the wiring diagrams hoping they made some sense.

Here goes:

165 727

c12 - c4 - manifold Air Temp sensor
c10 - c16 - Coolant Temp Sensor
c13 - c15 - Throttle Pos Senson
c14 - c7 - +5 volts ref
c5 - a1 - IAC A hi
c6 - a7 - IAC A lo
c4 - a8 - IAC B hi
c3 - a2 - IAC B lo
d7 - a16 - Oxygen Senson
d6 - a22 - Oxygen Senson Ground
b10 - d11 - Park/Neutral Switch Sig
b7 - a11 - Knock Sensor
b6 - b6 - VATS
d4 - c9 - EST
b5 - d13 - Ref
d5 - c3 - Bypass
b3 - d19 - Distr Ground
b1 - c1 - Batt + feed
c16 - d17 - Batt + feed
a6 - b10 - Ign Feed
a3 - a10 - canister Purge Sol
a4 - a4 - Exhaust Gas Rec (EGR)
a2 - a18 - Electric Air Switch
c2 - a19 - Electric Air Cont Solenoid
c8 - d22 - 4th gear switch
a7 - b7 - Torque Conv Clutch Cont.
a5 - b1 - SES
d15 - d9 - Inj driver 1,3,5,7
d10 - d4,d10 - inj. ground
d16 - d3 - Inj. driver 2,4,6,8
a1 - d7 - Fuel pump relay
b2 - a20 - Fuel pump signal
c1 - a9 - primary cooling fan
d11 - d21 - a/c fan request signal
b8 - b15 - a/c request signal
d1 - c6 - ecm ground
a12 - d12 - ecm ground
a7 - b7 - torque converter clutch control
a9 - b3 - diagnostic test term.
a8 - b11,b5 - serial data
d2 - c10 - cts, tps and engine oil temp ground

Not sure

165 727

--- - c14 - engine oil temp sensor - run new wire from new oil sensor
--- - c12 - map +5 volts - use maf wiring
--- - c22 - map signal - use maf wiring
--- - c5 - map and mat ground - use d2 ?
--- - c2 - vehicle speed sensor
--- - c8 - vehicle speed ground
--- - a12 - upshift light control
--- - b8 - vss output 4k
--- - a3 - secondary fan - 165 uses engine block sensor for fan relay ??
--- - b15 - a/c request signal
--- - a13 - a/c clutch control relay
--- - c17 - a/c status


May have missed some, I'll double check, can anyone double check these and answer the missing ones ?? Thanks - almost ready to cut :smash:

 

I hope you don't mean that literally and that you are going to make roughly 40 butt splices in the harness. I guess you cacn do it that way but man, that'd be a headache trying to trace down a bad wire.

Really only a few wires need to be cut/butt-spliced/hardwired, which are things like the VSS (at least from a 870 to a 730) and possibly some stuff with the KS circuitry. Everything else can just be unpinned and repinned. Mark each wire with 2 bits of info...2 different colors of pen. I used red pen and white shrink labels for the old pin and slid that on the wire, then black pen for where the new wire went to, slid that on, and had 2 tags for each wire, easily discernable with the different pen colors. I didn't really have any problems that way, but if I did, it would be the quickest way to trace stuff.

 

Disregard what I said earlier about sensor common and sensor ground. I just looked at the ECM schematics and I am going to plead the fifth.


[Modified by HighHopes85, 11:52 PM 4/18/2003]

 

The 727 pins are a different size than the 730, just compared the two together and the 727 pins "look" bigger?? Did you use a 727, I might try to pull a couple out and check.

The wiring diagram shows it as sensor ground so I assume ground is ground so I went out and actually checked and tps pin A is common ground from what I could tell. Thanks, almost got it. Hopefully can start by weeks end.

I could always use the 730 I guess but wanted to use the 727 and save the 730 for something else (non-corvette).

 

:banghead: I see 727 and 730 used in place of each other so many times, I figured you were going for the 727.

Good luck--and get a good crimper! The thought of 40 butt-splices worries me a bit after seeing what had been hacked on my car. But they used an appropriate tool--a hatchet and sawz-all. :D

 

if you are installing the ECM under the dash.. the 7730 will be easier to rewire then the 727

 

You may be right but still wanted to explore the 727 option, you done the 727 conversion right? Can you verify or send/post the pinouts, thought someone said that you had em, would really appreaciate it.

 

I know someone out there has the pinouts??? I've already done most of the work just need the few that are missing :confused: