6.0 mcss

I wanted to do the wiring harness my self for my engine swap but I need to know if anyone knows what wires to remove from the harness and pins from the pcm? I bought the cilton manual but I still have no clue what stays and what goes. Someone help I'm about to go crazy

terrya

but you have to figure what goes and what stays

1 Ground BLK/WHT
2 Ignition LT GREEN
3 Inj 3 PKN/BLK
4 Inj 2 LT GRN/BLK
5
6
7
8
9
10
11 KS Signal LT BLU
12 CKP DK BLU/WHT
13 Req torque ORG/BLK
14 serial data ORG/BLK
15 serial data DK BLU/WHT
16
17 range b DK BLU
18 range c RED
19 ignition PNK
20 B+ ORG/BLK
21 Ref low YEL
22
23 sens gnd PPL
24
25 HO2S LO TAN
26 HO2S LO TAN
27
28 HO2S LO TAN/WHT
29 HO2S LO TAN/WHT
30 Coolant level LT GRN
31
32 PRND A BLK/WHT
33 BRK SW PPL
34 PRND P WHT
35
36 Inj 1 BLK/WHT
37 Inj 6 YEL/BLK
38 Lift Dive sig PNK/WHT
39
40 Ground BLK/WHT
41 Ground BLK
42
43 inj 7 RED/BLK
44 inj 4 LT BLU/BLK
45 +5V GRY
46 +5V GRY
47 +5V GRY
48 +5V GRY
49
50
51 KS Signal
52
53 sens gnd
54 sens gnd
55 EGR input
56 Fuel Comp Sig
57 B+
58 CLS 2 Data
59 CLS 2 Data
60 sens gnd
61 Ref low
62
63 sens gnd
64
65 HO2S HI
66 HO2S HI
67
68 HO2S HI
69 HO2S HI
70 Oil Level
71
72 PRND B
73 CMP
74 ECT sig
75 Ignition
76 inj 5
77 inj 8
78
79 3-2 SS
80 Sens rtn

1 Ground BLK/WHT
2 TCC PWM BRN
3
4
5 Delivered Torque TAN/BLK
6 PC SOL HI RED/BLK
7 EGR Control RED
8 PC Sol Lo LT BLU/WHT
9 Fuel Pump DK GRN/WHT
10 RPM out WHT
11 Recirc Sw DK BLU
12
13 Cruise Eng LT BLU/BLK
14
15 Gen L BRN
16 4WD Low GRY/BLK
17 AC REQ DK GRN/WHT
18
19
20 VSS Lo LT GRN/BLK
21 VSS High PPL/WHT
22
23
24 TP Sig DK BLU
25 IAT SIG TAN
26 Ign Ctrl PPL/WHT
27 Ign Ctrl RED
28 Ign Ctrl LT BLU/WHT
29 Ign Ctrl DK GRN/WHT
30
31 MAF SIG YEL
32 MAP SIG LT GRN
33 Recirc Door DK GRN
34 Evap Can DK GRN/WHT
35
36
37
38
39 Ign Feed RED
40 GND BLK/WHT
41 EGR GND WHT
42 TCC SOL TAN/BLK
43 A/C CLU DK GRN/WHT
44
45 EVAP Vent WHT
46 MIL Ctrl BRN/WHT
47 2-3 SS YEL/BLK
48 1-2 SS LT GRN
49 VSS Out YEL/BLK
50 VSS Out DK GRN/WHT
51 TFT Sens Sig YEL/BLK
52 Gen F GRY
53
54 Fuel Lev PPL
55 CYC SW in DK GRN
56
57 SENS GND BLK
58
59
60 REF Low BRN
61 REF Low BRN/WHT
62 PRND C GRY
63 TRANS RNG A PNK
64 Fuel SIG CTRL DK GRN
65
66 IGN CTRL PPL/WHT
67 IGN CTRL RED/WHT
68 IGN CTRL DK GRN
69 IGN CTRL LT BLU
70
71
72
73
74
75
76 IAC COIL HI LT GRN/WHT
77 IAC COIL LO LT GRN BLK
78 IAC COIL LO LT BLU/BLK
79 IAC COIL HI LT BLU/WHT
80

6.0 mcss

That the problem I have the pinouts in the manual but I don't know what I have to remove from the harness?

ducaT

I PM'd you about this, but you won't have to remove much from the engine wiring harness.
Just get a underhood junction box, it will make your life much easier.

Then you take the pinouts from the junction box and hook up a few wires necessary to make the ignition and fuel pump connections.
These pinouts are in MOTOR or on AllData online. I have them as well.

Then you just run the hot wire from the battery to the post on the fuse box and you're done.

6.0 mcss

just pm'd you back

G-Body

iTrader: (4)

I didn`t remove any wires/pins from my conversion. The only reason to remove them would be to make the harness more compact and it looked like too much of a pain to unwrap the whole harness to remove the wires. I just taped off the ends and shrink wrapped them. I figure this way if I want to add something later (like controlling the A/C with the computer or using the Reverse light switch in the trans) the wire are already there. I don`t have a full list but I remember that I didn`t use any of the A/C wires, the starter wire, EVAP vent wires, VSS output, VATS, cruise(to be added later), reverse light switch, 4WD wires, oil pressure,coolant level,... It all depends on what you want to use on your conversion. If you use an underhood junction box from the truck it sounds like it would be even easier, 90% of the wires that I had to hook up were in the black plug going to that box. Only a few wires were in the smaller black and blue weatherpack plugs. Like the MIL light, serial data, TCC switch, and tach output.

G-Body

iTrader: (4)

Looked back over my diagrams last night and heres what I came up with. Use this as a guideline not facts, this is my first engine swap and I haven`t fired it up yet so I am not 100% positive on these. If you hook up the ones that say yes the engine should run, many of the ones that depend are emissions related and to be emissions legal you will have to keep them.

Black 14 pin connector. Not labled a-n, just identify order by wire color/placement.

A blu/blk pin 13 cruise engage Depends
B wht Power steering pump No
C pnk canister evap vent Depends
D grn pin 50 VSS out Depends
E ppl pin 33 TCC Break switch If using 4l60e/ 80e yes
F brn/wht MIL control Yes
G Grn pin 58 serial data Yes
H tan/wht oil pressure Depends
I wht pin 10 Tachometer Depends
J brn Power steering No
K yel VATS No unless using BCM
L brn 4wd low No
M grn A/C recirc. No
N grn/blk to fuse center Me no, but you ????????

Blue 12 pin plug

A
B
C Gry pin 45 evap vent Depends
D grn pin 64 fuel signal control Depends
E yel/blk pin 49 VSS out Depends
F wht pin 45 EVAP vent Depends
G orng/blk Pin 80 Blue connector No idea what it does??????????????
H
J blk pin 53 Blue ????????????????????????
K ppl pin 54 Fuel level Depends
L
M

2 Pin black connector is fo 4WD low range Not used


Large Black plug for fuse box. Not labled just follow diagram to find wires

Pnk Injection 2&4 Yes
blk ground Yes
pnk coils odd Yes
pnk ignition 1 Yes
ppl Starter Depends
yel PRND switch No
pnk Injection 1&3 Yes
pnk injection 5&7 Yes
ppl/wht PRND No
grn PRND No
pnk PRND No
Orng Battery Yes
pnk Front o2 Yes
pnk Rear o2 Depends
grn/wht Fuel pump relay Yes
pnk evap purge Depends
pnk injectors 6&8 Yes
blk Ground Yes
pnk coils even Yes
blk/wht ground Yes
LT Blue A/C Depends
pnk MAF Yes
drk blu A/C recirc. No
Grn A/C compressor Depends
LT grn PRND No
grn/blk to blk connector No/Depends
pnk evap vent Depends
pnk Ignition 2 pin 75 Yes