i just got a OBD2B-OBD1 conversion harness from boomslang for my 99 Si. two of the plugs plug in but the first one (green) won't plug into the conversion harness. is it the wrong conversion harness?

 

Post a pic up...

 

i tried it every way, flipped it, tried it on other slots but nothing.

 

that goes to ur fuse box..................correct me if im wrong people..........

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Superdragr45 &raquo;</TD></TR><TR><TD CLASS="quote">that goes to ur fuse box..................correct me if im wrong people..........</TD></TR></TABLE>

so those two are the only ones that are suppose to plug in?

 

it goes to the fuse box. btw, which harness are you using?

 

u should have two plugs from ur engine harness and one plug coming from ur fuse box. it seems to me like u have the wrong harness

 

i just finished my swap a few days ago. that one,i went to my fusebox. Just the other two were the only ones that plugged in for the conversion.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kay20adc2 &raquo;</TD></TR><TR><TD CLASS="quote">it goes to the fuse box. btw, which harness are you using? </TD></TR></TABLE>

so that's right, just two of them plug in? brand and everything is in the OP.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Superdragr45 &raquo;</TD></TR><TR><TD CLASS="quote">u should have two plugs from ur engine harness and one plug coming from ur fuse box. it seems to me like u have the wrong harness</TD></TR></TABLE>

wait, what? there is two plugs and im guessing that green one goes to the fuse box?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gentek1145 &raquo;</TD></TR><TR><TD CLASS="quote">i just finished my swap a few days ago. that one,i went to my fusebox. Just the other two were the only ones that plugged in for the conversion.</TD></TR></TABLE>

ok, so everythings good?

what year is your car and what harness did you use?

 

Does the back of your STOCK ecu look like:



or like:

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eran &raquo;</TD></TR><TR><TD CLASS="quote">Does the back of your STOCK ecu look like:



or like:

</TD></TR></TABLE>

good info right here................this should solve ur problem. to me, it seems like u have a 96-98 EX harness from the problems ur running into. i might be wrong but lemme kno man...............

 

its a OBD1 P72...

 

That's not what I asked.

I asked what the back of your STOCK ecu looks like. A p72 isn't your stock ecu for an EM1.

 

oh sorry, the stock si is the sencond one you pictured.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Battle23 &raquo;</TD></TR><TR><TD CLASS="quote">oh sorry, the stock si is the sencond one you pictured.</TD></TR></TABLE>

Then maybe you have your plugs mixed up, because the conversion harness you posted looks to be an OBD2B harness.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eran &raquo;</TD></TR><TR><TD CLASS="quote">

Then maybe you have your plugs mixed up, because the conversion harness you posted looks to be an OBD2B harness.</TD></TR></TABLE>

Yeah thats why I asked. Unless for what ever reason that one isnt suppose to plug in?

 

No, all three plugs are used. There should be FOUR plugs coming down by your ecu. As far as I remember, the green one plugs into another green plug, and not the ecu itself.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eran &raquo;</TD></TR><TR><TD CLASS="quote">No, all three plugs are used. There should be FOUR plugs coming down by your ecu. As far as I remember, the green one plugs into another green plug, and not the ecu itself.</TD></TR></TABLE>

this is true

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eran &raquo;</TD></TR><TR><TD CLASS="quote">No, all three plugs are used. There should be FOUR plugs coming down by your ecu. As far as I remember, the green one plugs into another green plug, and not the ecu itself.</TD></TR></TABLE>

damn so im missing a plug?

 

actually, for his model, it should be four............ cuz two come from the engine harness and two from the fuse box. pay close attention on this one....................the fuse box has two plugs, one which should go into the ECU and one flat green one that should plug into a female connector by the pass side kickpanel.......

 

i think he got a obd2a&gt;obd1 conversion harness instead of obd2b&gt;obd1.....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dek1mfk &raquo;</TD></TR><TR><TD CLASS="quote">i think he got a obd2a&gt;obd1 conversion harness instead of obd2b&gt;obd1.....</TD></TR></TABLE>

No, because he has two plugs fitting in the middle. On OBD2A, the small middle plug is empty. Look at the diagrams in this thread.

 

hes using an obd2a engine wiring harness then and the obd2b to obd1 jumper wont work. the green plug doesnt go to a fuse box, there should be a nother green plug down there by where u pulled the harness through the firewall

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RS93DA &raquo;</TD></TR><TR><TD CLASS="quote">hes using an obd2a engine wiring harness then and the obd2b to obd1 jumper wont work. the green plug doesnt go to a fuse box, there should be a nother green plug down there by where u pulled the harness through the firewall</TD></TR></TABLE>

the harness is off a 99 civic SI. i pulled it off myself when my friend wreked it after pulling the motor.

 

If your trying to put plug "A" in, while the harness is outside of the car, your going to have a hard time, plug "A" IS INSIDE THE CAR!!!