In preparation for the H22 swap, I'm trying to learn my way around the engine bay a little better before the motor shows up on my doorstep. I noticed some kinda funny stuff, which kinda confused me.
First off, this thingy:
The thin blue wire comes from the car harness and then terminates in what looks to be a harness plug taped back onto the car harness. But the "plug" on the end is kinda like solid rubber. . .no way to make contact with another plug. This is all located on the pass. side shock tower.
Secondly, this plug (top one of the three):
It comes from the FAT engine harness on the pass. side of the engine. There is nothing connected to it. . .it just kinda like ends. There are like 5 or 8 wires going in, but nothing coming out.
Lastly, I hear people talk all the time about swapping distributers when installing the JDM H22a, and using the "external coil" from the USDM motor. is this thing the "external coil"?
If so, will the bracket it is attached to simply bolt to the JDM H22 block, or do I have to get creative and find a new place to put it?
Sorry for all the seemingly nit-picky questions, but I'm just trying to make sure my ducks are all in a row before I tackle this swap. And don't worry. . .I'll have a helms before I lay into the project!
1 - the blue wire is prolly your tach signal wire. so if you wanna run an aftermarket tach, you hook the sender wire to that blue wire.
2 - are the wires in that harness all black and yellow? i dunno why there's nothing there.
3 - yes that's your coil. it'll be fine for use on the h22. as for mounting it, i don't know about that. you should be able to find a place to mount it.
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Originally posted by Boss Hogg
2 - are the wires in that harness all black and yellow? i dunno why there's nothing there.
I think a MAJORITY of the wires in the second pic (maybe not all though) are black with a yellow strips. I was thinking ABS eqipment or something else S models lack, but other trim lines had. Dont know why wiring for ABS eqipment would be in the engine harness though.
I dont think it has anything to do with checking the timing. To check timing you just hook the clamp wire on your timing light to the #4 cylinder ignition wire, and then watch your timing mark on the flywheel.
I dont know what the wires are, but that is the external coil. I will check under my hood later to see if anything is hooked up to that harness. It could possibly for ABS... maybe they just included the wiring so they wouldnt have to spend extra money at the factory to put a different wiring harness in the S models.
that little blue wire is for the tach. thats what i hooked up my tach too.
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1993 Red Prelude Vtec - Intake, tanabe racing medallion exhaust, H&R springs, dc sport short shifter adapter, white 17" rota subzero, underbody lites, underdash lites
The blue one is for a tach hook up at the dealer. They'll plug something in there and can read the RPMs. I'm not sure what the other connector is, but I have it in my engine too, also unconnected. I assume it's some other sort of diagnostic port. As for the coil, you can't mount it like the H23 coil because the VTEC solenoid is there. You'll have to get creative.
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Gone, but not forgotten...rest in peace Jon.
Number 1 is the tach Signal wire, Number 2 is a diagnostic port, and 3, yes that's your coil, you can use it, but you won't be able to use that bracket. Just buy a bracket for a 93-96 Vtec model and mount it on there. The blue wire can also be used for hooking up an aftermarket tach.
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WARNING: The Surgeon General has determined that motorcycle riding will cause swelling of the testicles, shrinkage of the brain and severe trauma to the ego.
why do people keep insisting that the blue wire isnt the tach wire? if i had a scanner i would show you in my helms book to get over the confusion.
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1993 Red Prelude Vtec - Intake, tanabe racing medallion exhaust, H&R springs, dc sport short shifter adapter, white 17" rota subzero, underbody lites, underdash lites
the yellow and black wires???....i was told they are grounds of some sort...that the pins in the connector are jumpers or something...but the diagnostics thing makes sense too..hmm peace
why do people keep insisting that the blue wire isnt the tach wire? if i had a scanner i would show you in my helms book to get over the confusion.
Believe me when I tell you that the Blue wire IS the tach Signal wire. It is used at the dealer for connecting your car to a diagnostic machine to monitor RPM. I used to be a tech for Honda and I am sure that I know what I am talking about. It is not the tach signal wire for the tach in your car. It is for Diagnostic purposes only. And if you get an after market tach you can use the blue wire for your signal. I have done this Numerous times.
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WARNING: The Surgeon General has determined that motorcycle riding will cause swelling of the testicles, shrinkage of the brain and severe trauma to the ego.
Red, the extra yellow-wired connector with no wires coming out of it is the ABS unit plug, (I don't have ABS either) and I have seen some 4th gens with ABS plugged into that connector.
I used my USDM 'S' model external coil on my JDM H22, and I just ordered a bracket new from the factory. In the meantime I have it zip-tied to the side of the battery box and that seems to work just fine.. I'm kinda wondering if I should just cancel the bracket, but what the heck.
Originally posted by kevie88 Red, the extra yellow-wired connector with no wires coming out of it is the ABS unit plug, (I don't have ABS either) and I have seen some 4th gens with ABS plugged into that connector.
I used my USDM 'S' model external coil on my JDM H22, and I just ordered a bracket new from the factory. In the meantime I have it zip-tied to the side of the battery box and that seems to work just fine.. I'm kinda wondering if I should just cancel the bracket, but what the heck.
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