i have jdm b18c motor on civic 99-00 ek, i believe the wire harness is either ex or si from 99-00, i cant know for sure because, i bought it off from here. but anyway i tried to look at the manual book on wiring color and what they are but i cant find what they are! please help me out if u know what they are. i just think that one of them is iat sensor but the color is not the same. and the other one wht/red and blu/red i have no absolute idea!

 

i have another question with iat sensor because i know there is one on the intake chamber before throttle body and then there is one on top of manifold runner sensor ? what r difference between those two?

 

i want to say that plug goes onto your power steering, but im not 100%. i think mine is green, looks the same though

 

my power steering is already plugged

 

where does it come from?

 

come from what?

 

if you follow the wire, where does it go

 

its on left engine bay are under manifold its just hanging with no where else to plug in.. or i may be missing something.

 

can anyone tell what they are by color wire? i cant find it on hayness and dealership manual

 

the 1st round plug looks like the IACV plug.

 

my iacv is already plugged. but i m going to check again if it is the correct plug to iacv.

i will tell u which of the following are plugged.

map, tps, iacv, cts, psp, ho2s, ks, alt, vtec, dizzy, i may be forgetting somethings.

i have not plug iat ( my iat is missing and need buy one for intake chamber) but i have iat sensor on top of my manifold, but i dont understand why will i have two iats?

 

First plug: Vtec pressure switch
Second plug: CKF plug

 

At some point someone switched out the intake manifold... that one will work fine... either or will work fine... pick one and go with it...

 

IACV plug, second one looks like the horn plug.

 

vtec pressure switch is one wire, arent they? where is ckf located on b18c?

 

No, see my above post. I didn't guess I went through the wiring diagram for a '99 Si.

Nope, 2 wire, knock is a single wire, same style plug.

On the oil pump. If it's a JDM engine it wont have one.

 

i see. yes its a jdm b18c. thats why i dont have neither vtec pressure switch nor ckf switch. so then i shouldnt be worried about those two plugs.

 

Exactly, so long as you're using the matching JDM ECU.

 

good to know now. thanks guys