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2G 95-96 and 97-99 Wiring Harness Differences

zckry

Proven Member
78
0
Nov 1, 2008
North, Texas
I'm trying to get my hands on a wiring harness for my 98 GSX but the only ones people seem to have are the 95-96 ones.

I'd like to know what the differences are and what I might need to change on the harness to work with my GSX if it were stock (it won't be that just a good starting point for me to go off of).
 

4g64fiero

Proven Member
199
0
Jan 13, 2008
Patrick AFB, Florida
The 95 Harness has a single fuel/mpfi relay where as on later cars they are separate. Other than that there are other minute differences you should be able to work out except for the different CAS in the 97 plus models that use a different plug.

Its best to stick with the right harness. The 95 CAS has an inverted signal and you would have to use dsmlink to use it.
 

gsx_guy

Probationary Member
10
0
Apr 10, 2006
san antonio, Texas
Is there any way to go around the fuel pump wiring using the 95 harness in a 97
 

boost97gst

10+ Year Contributor
3,033
133
Apr 2, 2012
st jacob, Illinois
Is there any way to go around the fuel pump wiring using the 95 harness in a 97

i didnt know about the differences in the fuel pump relay between 2gs. That said, yes, you could wire in a relay to run the pump with the *KEY* switch on. And in the same stroke run heavier pos and ground wire to the pump so youre doing the traditional "rewire" at the same time.
 
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gsx_guy

Probationary Member
10
0
Apr 10, 2006
san antonio, Texas
besides that are both of the harnesses similar? So the only way to rewire it is with a switch? So every time I get in the car I would have to press a switch to start the car?
 

boost97gst

10+ Year Contributor
3,033
133
Apr 2, 2012
st jacob, Illinois
What "switch"?? No, you would wire your ignition 12v switched (keyswitch in ON position) wire to the coil of a relay. The other side of coil is ground then 8 or 10ga positive from battery to the relay and out to fuel pump. Thats not that complicated. You wouldnt be flipping a switch at all. The switch is the RELAY.
 
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