It depends on what you dont need. For my Samurai i removed all the O2s thats 16 wires, MAF 3 wires, EVAP 3 wires, and my mind just went went blank haha.
If i get time ill find the papers.

 

We started my buddys harness for his 98.




Heres how many wires we pulled out.

 

What do you mean? If you pull wires, you lose options. Everything in that C2 connector is working as soon as your key hits "ON". If you removed the rear O2 sensors, you have wires running nowhere. I suppose you could remove those.. Like nonnieselman said, it depends on what you don't need. I'm currently redoing my harness, and there are very few things that I don't need...

 

C2 - Underhood Fuseblock 2005
Pin Wire Color Circuit No. Function
A1-A2 -- -- Not Used
A3 D-GN 59 A/C Compressor Clutch Supply Voltage (CJ2/CJ3)
A4-A6 -- -- Not Used
A7 D-GN/WH 465 Fuel Pump Relay Control - Primary
A8 OG 440 Battery Positive Voltage (M74)
A9 PK 1339 Ignition 1 Voltage
A10 L-BU 1320 CHMSL Supply Voltage/Stop Lamp Supply Voltage (KUP)
A11 GY 1524
GY 1524 Trailer Backup Lamp Supply Voltage
A12 PK 439 Ignition 1 Voltage (L59)
PK 439 Ignition 1 Voltage (EVA)
B1 -- -- Not Used
B2 OG 3440 Battery Positive Voltage (8.1L/PTO)
B3 BK/WH 1695 Axle Switch Signal
BK/WH 1695 Axle Switch Signal
B4-B6 -- -- Not Used
B7 BK 550 Ground
B8 OG 440 Battery Positive Voltage
OG 440 Battery Positive Voltage
B9 PK 1039 Ignition 1 Voltage

B10 PK 439 Ignition 1 Voltage - MAF/IAT Sensor (Gas)
PK 439 Ignition 1 Voltage - PCM (Gas)
B11-B12 -- -- Not Used
C1-C2 -- -- Not Used
C3 D-GN/WH 459 A/C Compressor Clutch Relay Control (CJ2/CJ3)
C4-C5 -- -- Not Used
C6-C7 -- -- Not Available
C8-C9 -- -- Not Used
C10 PK 1039 Ignition 1 Voltage (Except 4.3L)(Gas)
PK 1039 Ignition 1 Voltage (Gas)
C11 -- -- Not Used
C12 PU 420 TCC Brake Switch/Cruise Control Release Signal
PU 420 TCC Brake Switch/Cruise Control Release Signal (M74)
D1-D2 -- -- Not Used
D3 L-GN 275 Park Neutral Position Switch Park Signal
D4 -- -- Not Used
D5 RD/WH 4740 Battery Positive Voltage (10 Series Except HP2)
RD/WH 4740 Battery Positive Voltage (10 Series Except HP2)
D6-D7 -- -- Not Available
D8 PK 539 Ignition 1 Voltage - HO2S Bank 1 Sensor 1(Gas except HP2)
PK 539 Ignition 1 Voltage - HO2S Bank 2 Sensor 1(Gas except HP2)


D9 PK 1239 Ignition 1 Voltage (Gas)


D10 PK 1039 Ignition 1 Voltage (Gas)
PK 1039 Ignition 1 Voltage (Gas)
D11 PU 6 Starter Solenoid Crank Voltage (w/o HP2)
D12 YE/BK 625 Starter Enable Relay Control (Except HP2)
E1-E5 -- -- Not Used
E6 PK 1239 Ignition 1 Voltage - Fuel Injector 2 (Gas)
PK 1239 Ignition 1 Voltage - Fuel Injector 4 (Gas)
GY/BK 2219 FICM Relay Control (Diesel)
E7 PK 1539 Ignition 1 Voltage - HO2S - Bank 1 Sensor 2 (Gas except HP2)
PK 1539 Ignition 1 Voltage - HO2S - Bank 2 Sensor 2 (Gas except HP2)


E8-E9 -- -- Not Used
E10 PK 1239 Ignition 1 Voltage (Gas) (Except 4.3L)
PK 1239 Ignition 1 Voltage (Gas)
E11 PK 1020 Ignition 0 Voltage (A/T Except M74)
PK 1020 Ignition 0 Voltage
E12 -- -- Not Used
F1-F2 -- -- Not Used
F3 PU 806 Crank Voltage
F4-F7 -- -- Not Used
F8 PK 839 Ignition 1 Voltage
F9 PK 639 Ignition 1 Voltage
F10 PK 1020 Ignition 0 Voltage
PK 1020 Ignition 0 Voltage (M74 or HP2)
F11 D-GN 1433 Park/Neutral Start Switch Signal (Except HP2)
F12 -- -- Not Used

 

try this link LT1 Swap thers tons of info ther.. i used it to make my harness for my 6.0 swap if your going stand alone you need to keep a pair of vss wires so the ecm knows its moving so it can switch from idle mode if you read the pages if info the guy will explain it beter than i can..