Today at work, I spend about an hour looking at a RSX helms and comparing it to a 92-95 Helms.

After looking at the all the harnesses on the type-s motor, I must admit, I am not pretty sure what approach is needed. (no ****! )

So I would appreciate some guidance and thoughts. Remember what we are trying to do here is mate a k20a motor and engine harness with a 92-95 Civic with no vtec wiring.

Please take some time and explain to me what do you think is needed to be done. I would like to know more about the theory behind it.

Assuming the K20A swap comes with the engine wire harness. That harness of course will not plug in the same way the obd1/2 harnesses did.

Of course this is a HUGE subject so please bare with me. In what part of the civic wiring should we cut?

This is a nightmare but I would like to undestand it better.

The RSX has the following cables/harnesses that I think should be somewheat relevant.:

Engine ground cable
Battery ground cable
Starter Subharness
Engine wire harness
Engine compartment wire harness (left branch)
Engine compartment wire harness (right branch)
Dashboard Wire harness (left branch)
Dashboard Wire harness (right branch)

I would like to know ideas about how could we set this up on irder to use the RSX ECU.

Please feel free to add anything to this post without making it go off topic.

Here are some pics to show the amount of wiring

 

wow
that is VERY ambitious.

if i was doing it i would not bother unless i had the underdash harness of the rsx as well. i hate tryoing integrate 2 different obd's wiring, i would rather integrate teh lighting and systems in teh back half of the car to a new underdash harness that works with the engine and ecu....

good luck is all i can say!

 

to that

 

First of all , I haven't bought the K20A yet and I am not sure if I will.

I really don't care about fitment right now. It can be messy and ugly but I am sure there is a way for the engine and motor/axles to sit.

You are right though, a front clip would do the trick if it contained the dash wire harness but in a way that is cheating...

Do you guys think that a Honda Certified Mechanic, specialized in wiring would be able to do it with not hassle? Would it even need to be a honda mechanic? How about an electrical automotive engineer?




Modified by Nikos at 9:33 PM 8/5/2003

 

hmmm RSX ECU I would assume be the best way to go. cause mods coming out now involve reprogramming that ECU.

if your use the RSX ecu. wouldnt the wiring just be to all the indash hook ups
(using my knowledge of the EK swap I did, theres 2 indash, one in engine, and one by ECU.)

please forgive me if everything I said is wrong or such. Im really interested in learning about the Ks and wiring. im just trying to put what I know into concepts for wiring

 

You really have no choice other than using an RSX ECU. All the timing is controlled via ECU, not cam gears etc. which would be next to impossible to program into a p28, p72 and the like. If i were you, I would just hang tight since a harness will be coming out pretty soon, unless this is something that you really want to accomplish yourself.

 

k20's use like 10-15 fuel maps (or somewhere around there) so thier computer is needed.

 

if you're really interested, ask hasport or someone who's actuallly done the conversion. i would get the in car harness if possible too. id use the stock k20 harness all the way to the ecu, then re-wire the in car harness to the ecu.

 

Great topic.

Hopefully we can get some good info from some people who is in the process of doing this swap.

 

it doesnt seem that complicated to me.. just use the harness from the motor to the ecu. and use the rsx helms so you know how to repin the cluster. i sldo heard there was something to do with the key has to match the ecu or someshit, like anti theft device.. but i only heard this along time ago when the rsx first came out

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drunknbass &raquo;</TD></TR><TR><TD CLASS="quote"> i sldo heard there was something to do with the key has to match the ecu or someshit, like anti theft device.. but i only heard this along time ago when the rsx first came out</TD></TR></TABLE>

The immobilizer [sp?] can be disabled.

 

any ideas from the nightkids?

 

This may be way off base but wtf. Use the k motor, ecu and underdash harness. I think the easiest route may actually be to re wire each sensor to its pin location in the ecu harness, basically you would re wire all 100 or so items one at a time, sounds like fun.

 

any more ideas?

 

well im gonna do this swap in about 2 months when my cars back from the painter.

 

Contact "Pacman" here on Honda-Tech who has a K20 in his EK or give Autolink Motorworks a call at (626) 279-7122. Dr. Charles works there and I think he was the first one to drop a K20 swap in a EG/EK...

Hope this helps.


-Chris

 

As I follow the wiring diagram from Hondata.com, the A & B plugs goes directly to the ECU (that's simple). The part that I'm unsure about is the E plug (31 pins) and the Engine Harness plug (20 pins). My guess is these two plugs will gets wire to the Civic driver side shock tower harness. As shown from the wiring diagram, E plug is wire to fuel pump relay, main relay, ignition power; so the E plug is something like a power supply to ECU. The Engine Harness plug is wire to O2 sensor and warning lights, so this plug is mainly signal from O2 and and signal for gauge cluster light. I was just guessing, haven't done it yet. Any input on this would be helpfull, or maybe someone can supply me a link describe Civic harness from Helm manual would also be helpfull

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HIStateEG6 &raquo;</TD></TR><TR><TD CLASS="quote">As I follow the wiring diagram from Hondata.com, the A & B plugs goes directly to the ECU (that's simple). The part that I'm unsure about is the E plug (31 pins) and the Engine Harness plug (20 pins). My guess is these two plugs will gets wire to the Civic driver side shock tower harness. As shown from the wiring diagram, E plug is wire to fuel pump relay, main relay, ignition power; so the E plug is something like a power supply to ECU. The Engine Harness plug is wire to O2 sensor and warning lights, so this plug is mainly signal from O2 and and signal for gauge cluster light. I was just guessing, haven't done it yet. Any input on this would be helpfull, or maybe someone can supply me a link describe Civic harness from Helm manual would also be helpfull</TD></TR></TABLE>

Do you realize that you replied to a post that is a year old? I think they pretty much know what to do now.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nonsense &raquo;</TD></TR><TR><TD CLASS="quote">Do you realize that you replied to a post that is a year old? I think they pretty much know what to do now. </TD></TR></TABLE>
lol

 

too much rattling

 

oop I didn't realize that but I haven't found any info on the wiring though

 

something tells me hybrid-racing & hasport & hondata figured it out by now

https://honda-tech.com/zerothread?id=921343

http://www.hondata.com/techk20wiring.html

dumbasses

 

everyone just get off your butts and work your butt off and buy the harness done right. I just went though the swap in a 2000 si and we used the hybrid racing harness and the stock rsx harness. Worked great. Super easy. A 3 year old can do it.

 

without actually seeing it in person, i'd just remove every bit of wire from the civic and wire the motor directly to the ecu. then i'd go back and add in plugs for ease of removal later.

and id charge someone out the a$$ for labor

i'd like to see how hasport went about this task tho

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EK9Greg &raquo;</TD></TR><TR><TD CLASS="quote">everyone just get off your butts and work your butt off and buy the harness done right. I just went though the swap in a 2000 si and we used the hybrid racing harness and the stock rsx harness. Worked great. Super easy. A 3 year old can do it. </TD></TR></TABLE>
You see...It not the problem for me to purchase the custom harness, as the matter of fact, I just want to test my skill on wiring.