LTX and LSXPutting LT1's, LS1's, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects, including repairs, swap info, and performance upgrades.
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37 wire connector
Cavity Color
A 1 Wh Goes to brake light switch (tells EBCM,
Electronic Brake Control Module, brakes
applied)
A2 Not used
A3 Dk Grn Goes to power antenna relay B
A4 Bare Called a "drain return" wraps rear wheel
speed sensor wires that go to Red 5
cavity connector
A5 Wh Goes to Red 5 cavity connector
A6 Not used
B1 Dk Blu Theft deterrent Module A3 "fuel enable
signal"
B2 Ppl Goes to Cruise control "release switch" D
B3 Yel For Police front flashing lamps
B4 Dk Grn/Wh Vehicle speed signal from PCM, goes to
splice, then, D8 of 56 cavity connector to
speedometer & C2 cavity 16 Radio;A5 of
Turn signal alert alarm in Convenience
Center, thru grommet to K of Cruise
Control Module.
B5 Wh Goes to Red 5 cavity connector
B6 Tan Goes to DLC (Data Link Connector) 9
C1 Pink Goes to splice, then IGN switch, fuses-
11,12,13,14,15
C2 Gray Goes thru grommet to fuel pump C
C3 Ppl Goes to wiper switch "HI" E
C4 Gray Goes to wiper switch "Wash" C
D1 Not used Buick Only
D2 Not used Buick Only
E1 Yel Goes to grommet, then Lt Frt wheel
speed sensor
F1 Bare Same as E1 above
F2 Lt Blu Same as E1 above
G1 Orn Goes to splice, then, IGN "Run", Circuit
breaker 2, fuses-16,17,18,20
G2 Pink Goes to wiper switch "Mist/Off" F
G3 Dk Grn Goes to wiper switch Off/Mist/Low/Hi" D
G4 Gray Goes to power antenna relay "UP" A
H1 Wh This tach signal (Impala only)
H2 Wh Goes to power antenna relay "Down" C
H3 Lt Blu For Police front flashing lamps
H4 Dk Grn For Police front flashing lamps
H5 Orn/Blk Goes to splice, Orn/Blk wire of Trunk
release relay, and Brake/Trans interlock
solenoid. It is "floating Grd, allows these
to operate IF in Park or Neutral
H6 Wh/Blk Grounds the following to an under hood
grd:Theft deterrent module B5, Cruise
Module E, Park/Neutral switch A,
J1-5 Not used
J6 Ppl Goes to DLC 2
------------------------------------------------------------------ These are the wire descriptions i foun in the sticky and my connector. i need to kno what to hook some of them up to, some of them are different from mine though.(above)
------------------------------------------------------------------- These are the wires i believe to believe to be important(below)
------------------------------------------------------------------- B1 Dk Blu Theft deterrent Module A3 "fuel enable
signal"
C1 Pink Goes to splice, then IGN switch, fuses-
11,12,13,14,15
C2 Gray Goes thru grommet to fuel pump C
G1 Orn Goes to splice, then, IGN "Run", Circuit
breaker 2, fuses-16,17,18,20
H6 Wh/Blk Grounds the following to an under hood
grd:Theft deterrent module B5, Cruise
Module E, Park/Neutral switch A,
--------------------------------------------------------------------- this is what my harness looks like(below)
****are the ones that are different
----------------------------------------------------------------------
37 wire connector
Cavity Color
****A1 Not Used
****A2 Not used / light yellow on other side
****A3 Not Used
****A4 Not Used / baby Blu on other side
****A5 Not Used
****A6 Not used / Drk Grn on other side
B1 Dk Blu
B2 Ppl
****B3 Pnk/ Blk
B4 Dk Grn/Wh
****B5 Not Used
B6 Tan
****C1 Yellow (this is my starter wire)
C2 Gray ( this is my fuel pump wire)
C3 Ppl
C4 Gray
D1 Not used
D2 Not used
****E1 tan
F1 Bare Same as E1 above
****F2 Grn
G1 Orn ( this gets hooked to power for circuit breaker 2)
G2 Pink
G3 Dk Grn
G4 Pnk (fat wire i assume for power when IGN on)
H1 Not Used
H2 Wh
H3 Not Used
****H4 Orng/ Blk
****H5 Not Used
H6 Wh/Blk Grounds the following to an under hood
grd:Theft deterrent module B5, Cruise
Module E, Park/Neutral switch A,
J1 Not used
****J6 Not Used
--------------------------------------------------------------------- Now for what i did(below)
-------------------------------------------------------------------
C1 is the starter wire for cranking, hooked it up
C2 is fuel pump, ran it to fuel pump wire, it primes and everything
G1/ G4 i hooked both of them to my IGN wire from my car, they get power when my key is on
****** i am assuming my problem lies in B1 and/or H6*******
any advice is appreciated, thank you.
Last edited by fbirdroller; 07-22-2009 at 01:35 PM.
Reason: image problem
ok guys, i got the proper pinout descriptions to match my harness, so now i have some different questions, more specific. my information says the drk blu from B1 goes from ccm to pcm-what is the ccm and how do i do this? i tried some things with the wires to try and get a feel of what to do with and one of my conclusions is that (do) i need to get a passkey module (anti theft module) for the harness and hook it in order for the drk blu fuel signal to function properly? also my description says i have a variable oriface feed and return wire, what are these? also i have a neutral safety ground and a switched ground for neutral/park, are these supposed to be grounded in "run" or not grounded in "Run". one has ground and one doesnt and i dont know where they are supposed to go to. soon as i remember to brng the paper with the pin descripts i will post them for you to c. i appreciate any help i can get.
