Hmm, a little help here. I'm in the process of swapping a '97 JDM B18C into my '00 Civic, utilizing a '00 5spd Civic EX harness. Now I thought I had all the clips accounted for, and the ones that I don't need as well, but here I am with one more. Can any one help me id this plug? It was getting dark out when I noticed it...

It's square, Grn/Blk and Yel.

 

might be o2 plug

 

yup that is the o2 sensor plug...

 

thats definitely not O2 sensor, it looks like a plug off an automatic transmission or reverse sensor plug (I see that it's plugged it)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sicones &raquo;</TD></TR><TR><TD CLASS="quote">thats definitely not O2 sensor, it looks like a plug off an automatic transmission or reverse sensor plug (I see that it's plugged it)</TD></TR></TABLE>

Yeah I didn't think it was either but I didn't wanna say anything b/c I'm not 100% sure on that and I didn't want 50 people to be like "ahh you ******* moron" because I'm sure there's some gay difference like that between USDM and JDM engines :-P

I was thinking reverse plug, but it doesn't look like it would reach with the EX so I mean why would it not fit here, y'know?

Anyways, at OP:
Was the harness off of a manual or auto EX (I don't know much about automatic trannies, so I can't attest to what that other dude said, but it may be an extra plug)? Also, did u label all ur plugs & count 'em before u pulled the motor?

 

i belive that it is the o2 sensor plug also...

 

i dunno looks to me like the reverse plug but i dunno thats my .2 cents

 

Isn't that the O2 plug I see already plugged in directly underneath the coolant hose attaching to the motor?

Maybe vtec solenoid. Just a guess.

 

vtec ?
not an o2
o2 only have 2 or 4 wires i think

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TorquelessB16 &raquo;</TD></TR><TR><TD CLASS="quote">Isn't that the O2 plug I see already plugged in directly underneath the coolant hose attaching to the motor?

Maybe vtec solenoid. Just a guess. </TD></TR></TABLE>

Yeah, VTEC, not the O2, that's the other side of the engine :-P

 

its the reverse light sensor.

/thread.

 

Ok, it's not VTEC since the solenoid is already plugged in (1 wire plug).

It's not the VTEC oil pressure switch because the JDM motor doesn't have it and I already wrapped and set that plug from the harness aside.

It's not O2 because a) it's only 2 wires (EX has 4 wires per O2 - heated), b) the primary O2 is on the other side, at bottom of header (EX harness again).

It can't be something from an auto harness because its a 5spd harness. The reverse switch is just to the right and is plugged into the 2 wires I extended from the cabin for reverse (auto-&gt;5spd conversion). The reverse switch wiring from the tranny is Grn/Grn and square for anyone wondering.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">Anyways, at OP:
Was the harness off of a manual or auto EX (I don't know much about automatic trannies, so I can't attest to what that other dude said, but it may be an extra plug)? Also, did u label all ur plugs & count 'em before u pulled the motor?</TD></TR></TABLE>

It's a 5spd harness as stated. I made sure to be as thorough as possible comparing plugs from motor to motor but my original D16 was mated to an auto, so I didn't use that harness. I had another one from a 5spd so I used that.

I'm going to go check it over again now that it's light out... I was pretty sure I had everything accounted for. Will report back if I find anything.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dxcoupe. &raquo;</TD></TR><TR><TD CLASS="quote">its the reverse light sensor.

/thread.</TD></TR></TABLE>

Just to make sure, the 5spd harness has the reverse plug on it? I'm assuming it's connected to the A clip at the ECU side which is then routed elsewhere.

Hmm, ok, I guess that's possible then, since I was going by the auto-5spd swap guides that say to route the wire out to the reverse light sensor off the tranny. I guess that was so the harness wouldn't have to be swapped.