Rostra Precision Controls GM 4L80E User Manual
Installation Instructions for GM 4L80E External Harness (350-0033)
FOR UPGRADING 1991-1993 CONNECTORS AND FOR 1994-UP REPAIR
1. Locate and unplug the large round gray connector going to the transmission on the current harness. Remove and save any
conduit, clamps, etc. for reuse.
2. Cut wire approximately 5 inches from back of the transmission connector.
NOTE: If any wires are damaged, adjust splices accordingly.
3. Splice the new external harness to wires according to the chart provided below.
NOTE: 1991 to 1993 pink wire at position "K" is not used with this kit. Tape the wire back to the harness to prevent
a possible short.
4. Stagger splices approximately 1 ½ inches apart (splices should not overlap).
5. After the proper lengths of wire have been determined, strip insulation from wires ¼" to 3/8".
6. Position stripped end of wire into sleeve until it stops and crimp with approved crimping tool. Gently pull on the wire to
ensure the crimp is secure.
7. Apply heat to splice insulation to shrink it around the wire.
8. Electrically check for continuity with a meter or tester.
9. Reinstall any removed conduit, clamps, etc. and connect the new plug/harness assembly to the transmission.
NOTE: Four wheel drive vehicles have a black clip
on the back of the old connector to guide
the wires around the transfer case.
A new one is provided in this kit.
Install the clip as shown here.
PUSH TO SNAP
CLIP FOR 4WD
Form #4176, Rev. E, 11-30-01
Inst
allation Instructions for GM 4L80E External Harness (350-0033)
FOR UPGRADING 1991-1993 CONNECTORS AND FOR 1994-UP REPAIR
1. Locate and unplug the large round gray connector going to the transmission on the current harness. Remove and save any
conduit, clamps, etc. for reuse.
2. Cut wire approximately 5 inches from back of the transmission connector.
NOTE: If any wires are damaged, adjust splices accordingly.
3. Splice the new external harness to wires according to the chart provided below.
NOTE: 1991 to 1993 pink wire at position "K" is not used with this kit. Tape the wire back to the harness to prevent
a possible short.
4. Stagger splices approximately 1 ½ inches apart (splices should not overlap).
5. After the proper lengths of wire have been determined, strip insulation from wires ¼" to 3/8".
6. Position stripped end of wire into sleeve until it stops and crimp with approved crimping tool. Gently pull on the wire to
ensure the crimp is secure.
7. Apply heat to splice insulation to shrink it around the wire.
8. Electrically check for continuity with a meter or tester.
9. Reinstall any removed conduit, clamps, etc. and connect the new plug/harness assembly to the transmission.
NOTE: Four wheel drive vehicles have a black clip
on the back of the old connector to guide
the wires around the transfer case.
A new one is provided in this kit.
Install the clip as shown here.
PUSH TO SNAP
CLIP FOR 4WD
Form #4176, Rev. E, 11-30-01
Rostra
Precision
Controls, Inc.
Rostra
Precision
Controls, Inc.
REPAIR HARNESS 1991 TO 1993 1994 UP
REPAIR HARNESS WIRE POSITION FUNCTION ORIGINAL HARNESS WIRE POSITION WIRE POSITION
WIRE COLOR (SEE FIGURE 2) WIRE COLOR (SEE FIGURE 1) (SEE FIGURE 2)
LIGHT GREEN A 1-2 SHIFT LIGHT GREEN AA
YELLOW B 2-3 SHIFT YELLOW/BLACK BB
R
ED/BLACK C PCS HIGH RED/BLACK LC
LIGHT/BLUE D PCS LOW LIGHT BLUE/WHITE MD
P
INK/BLACK
PINK E +12V IGNITION OR PINK CE
OR BROWN
BLACK/YELLOW
BLACK/YELLOW LTEMP SIGNAL OR YELLOW/BLACK GL
PURPLE
BLACK
MTEMP GROUND OR BLACK HM
GRAY N PSM SIGNAL AP
INK DN
R
ED
P PSM SIGNAL CRED FP
B
LUE
R PSM SIGNAL BDARK B
LUE ER
T
AN/BLACK
BROWN
S TCC CONTROL OR DARK B
LUE JS
OR B
ROWN
N
ONE UNUSED NONE PINK KUNUSED
PINK/BLACK DO NOT USE
FIGURE 1
1991-1993
C D
E F
A B
G H
J K L M
FIGURE 2
A B
C D
E
L
N P
R S
PIN VIEW OF
INTERNAL CASE
CONNECTOR.
TU
M
FIGURE 2
1994 - ON
REPAIR HARNESS 1991 TO 1993 1994 UP
REPAIR HARNESS WIRE POSITION FUNCTION ORIGINAL HARNESS WIRE POSITION WIRE POSITION
WIRE COLOR (SEE FIGURE 2) WIRE COLOR (SEE FIGURE 1) (SEE FIGURE 2)
L
IGHT GREEN A 1-2 SHIFT LIGHT GREEN AA
Y
ELLOW B 2-3 SHIFT YELLOW/BLACK BB
RED/BLACK C PCS HIGH RED/BLACK LC
LIGHT/BLUE D PCS LOW LIGHT BLUE/WHITE MD
P
INK/BLACK
PINK E +12V IGNITION OR PINK CE
OR BROWN
BLACK/YELLOW
BLACK
/YELLOW LTEMP SIGNAL OR YELLOW/BLACK GL
P
URPLE
BLACK MTEMP GROUND OR BLACK HM
GRAY N PSM SIGNAL APINK DN
RED P PSM SIGNAL CRED FP
B
LUE R PSM SIGNAL BDARK BLUE ER
TAN/BLACK
BROWN S TCC CONTROL OR DARK BLUE JS
OR BROWN
N
ONE U
NUSED NONE PINK KUNUSED
PINK/BLACK DO NOT USE
FIGURE 1
1991-1993
C D
E F
A B
G H
J K L M
FIGURE 2
A B
C D
E
L
N P
R S
PIN VIEW OF
INTERNAL CASE
CONNECTOR.
TU
M
FIGURE 2
1994 - ON
Form #4176, Rev. E, 11-30-01
Form #4176, Rev. E, 11-30-01
Loading...