Tech / Misc Tech topics that don't seem to go elsewhere.
Sponsored by:
Sponsored by:

GSR engine Wiring Harness OBD2a vs. OBD2b

Thread Tools
 
Search this Thread
 
Old Aug 24, 2006 | 02:13 PM
  #1  
Tonyl507's Avatar
Thread Starter
Honda-Tech Member
 
Joined: Jan 2006
Posts: 435
Likes: 0
From: Jersey
Default GSR engine Wiring Harness OBD2a vs. OBD2b

Like title says, any difference???

I pulled a harness off my '97 GSR, but it was frayed and cut, so i bought a used OBD2a harness. Problem is that the harness I received is different then the one I pulled off. I think the guy either a.) ripped me off or b.) maybe sent a OBD2b rather then a?

Do the harnesses differ by year? I have a helms but I havent had a chance to match it all up yet, any help would be appriacited
Reply
Old Aug 25, 2006 | 09:36 AM
  #2  
Tonyl507's Avatar
Thread Starter
Honda-Tech Member
 
Joined: Jan 2006
Posts: 435
Likes: 0
From: Jersey
Default Re: GSR engine Wiring Harness OBD2a vs. OBD2b (Tonyl507)

anyone?
Reply
Old Aug 25, 2006 | 12:38 PM
  #3  
:Andrew's Avatar
Honda-Tech Member
 
Joined: Oct 2004
Posts: 113
Likes: 1
From: Columbia, SC
Default Re: GSR engine Wiring Harness OBD2a vs. OBD2b (Tonyl507)

how many plugs are there to go in the ecu?
Reply
Old Aug 25, 2006 | 08:10 PM
  #4  
Shmaa's Avatar
Honda-Tech Member
 
Joined: Sep 2003
Posts: 353
Likes: 0
From: Xenia, Ohio
Default Re: GSR engine Wiring Harness OBD2a vs. OBD2b (:Andrew)

big difference

http://www.pgmfi.org/twiki/bin...rness
Reply
Old Aug 27, 2006 | 02:37 PM
  #5  
powerfulperformance's Avatar
Honda-Tech Member
iTrader: (1)
 
Joined: Jan 2000
Posts: 1,672
Likes: 2
From: 845, Ny, USA
Default Re: GSR engine Wiring Harness OBD2a vs. OBD2b (Shmaa)

U should be able to use it. I'm used a 2000 type r harness in a 95 gsr. NOw i'm using that same harness in my 98 itr...
Reply
Old Aug 28, 2006 | 11:05 AM
  #6  
Tonyl507's Avatar
Thread Starter
Honda-Tech Member
 
Joined: Jan 2006
Posts: 435
Likes: 0
From: Jersey
Default Re: GSR engine Wiring Harness OBD2a vs. OBD2b (powerfulperformance)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by :Andrew &raquo;</TD></TR><TR><TD CLASS="quote">how many plugs are there to go in the ecu?</TD></TR></TABLE>

Its just the main engine harness under teh hood. The plugs to the ECU in the car I pulled my harness off of are definitly OBD2a.

The differneces between the harness I pulled and the harness I got are that the one I pulled had 34 connectors, and the one I got has 33. That means one connection wont have power in my car. I've tried to figure out which plug on mine is the extra one, but its hard to tell b/c the two harnesses use differnet color wiring.

All the main connections like injectors, starter, alt. etc. seem to be the same.
BUT, toward the middle of the harness the wires are bundled together differenty.
I'm going to draw up a scetch to show you guys.

I think the extra plug on my harness might be the plug to open the secondary butterfly on the I/M of the GSR. Does anyone know what size this plug is, or which color wires?
Reply
Old Aug 29, 2006 | 11:25 AM
  #7  
Tonyl507's Avatar
Thread Starter
Honda-Tech Member
 
Joined: Jan 2006
Posts: 435
Likes: 0
From: Jersey
Default Re: GSR engine Wiring Harness OBD2a vs. OBD2b (Tonyl507)

okay Heres a Scetch of the wiring harness I took off my GSR, has 34 connectors



Here is how many pins each plug has:
plug 1 = Grd
2= 14
3= 4
4=10
5=3
6=3
7=2
8=2
9=2
10=13
11=2 (thick wires)
12=8 (yellow wires, end is covered...)
13=2
14=1 (green colored connector)
15=2
16=1 (plug)
17=1 (power to alternator)
18=4 (to alternator)
19-22=2 (injectors)
23=4
24=2
25=GRD
26=3
27=3
28=8 (7 are small, 1 is thicker)
29=1 (plug)
30=2
31=2
32=2 (green conector)
33=1
34=1 plug


NOW, heres the harness I bought.... has 33 plugs


Here is how many pins each plug has:
plug 1 = Grd
2=14
3=4
4=10
5=3
6=3
7=3
8=3
9=2
10=2
11=12
12=2 (thicker wires)
13=8 (yellow wires w/ end covered
14=1
15=4 (Connector to alternator)
16=1 (power to alternator)
17=1 plug
18=2
19-22=2 (injectors)
23=2
24=4
25=2
26=GRD
27=8 (7 smaller and 1 thicker)
28=2 (green conector)
29=1
30=2
31=2
32=1 plug
33=1 plug



OKAY..... so its one plug short, AND I matched up some plugs and ther is a few with differnt sized connectors:
ON the GSR:
plug#7, 13, and 15 have no match to the new one
ON the New one:
plug#18 and 24 have no match on my GSR

I'm guessing its safe to say this new harness is not a good replacement for my GSR one???????
Reply
Old Sep 1, 2006 | 06:15 AM
  #8  
Tonyl507's Avatar
Thread Starter
Honda-Tech Member
 
Joined: Jan 2006
Posts: 435
Likes: 0
From: Jersey
Default Re: GSR engine Wiring Harness OBD2a vs. OBD2b (Tonyl507)

BUMP... can anyone ID either of these?
Reply
Old Sep 1, 2006 | 12:39 PM
  #9  
audiimportech's Avatar
Junior Member
 
Joined: Nov 2005
Posts: 50
Likes: 0
From: west chester, oh, usa
Default Re: GSR engine Wiring Harness OBD2a vs. OBD2b (Tonyl507)

well this may sound retarded but if you add up the number of pins from the 3 plugs on your harness and the 2 plugs on the harness you have that don't seem to match up, there are 6 pins on each. Did you find out what each of the wires connected to these pins was for to see if they were the same?? if so i would make sure all the other connecters matched up to their appropriate receiving end and try to modify the other plugs or wires. just a suggestion. let me know what you find out about the wires that don't match up.
Reply
Old Feb 10, 2008 | 04:03 PM
  #10  
tekstyle's Avatar
Honda-Tech Member
 
Joined: Aug 2002
Posts: 1,799
Likes: 0
From: ca
Default Re: GSR engine Wiring Harness OBD2a vs. OBD2b (audiimportech)

watching.
Reply
Old Feb 14, 2008 | 04:12 PM
  #11  
mtny's Avatar
Honda-Tech Member
15 Year Member
 
Joined: Oct 2005
Posts: 6,595
Likes: 0
From: TN
Default Re: GSR engine Wiring Harness OBD2a vs. OBD2b (tekstyle)

I want to know the same thing, I'm not sure what harness I need for my 2000 GSR.

Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SCMFOX
Acura Integra Type-R
2
Feb 1, 2018 05:18 AM
CKnight90
Want to Buy
12
May 21, 2013 10:53 AM
562daybid
Honda Civic / Del Sol (1992 - 2000)
4
Mar 23, 2008 06:29 PM
LSVTEC408
Northern California (Sales)
6
May 31, 2006 07:45 AM
june
Honda CRX / EF Civic (1988 - 1991)
3
Nov 30, 2001 06:49 PM




All times are GMT -8. The time now is 04:44 PM.