Ok well I'll start at the top. I haves 94 civic coupe dx non vtec. I pulled that motor out and dropped in a 2000 jdm type r complete motor with all wiring and ecu. I thought it was gonna be pretty straight forward. I have all the wiring coming from the motor all the way to the battery then to the ecu. Is it that simple? I've recently been confused by someone saying I need to do something to the passenger side tower. Can someone explain what this is? Or what I got to do? Please help

 

You can't use the jdm harness on a usdm car, that's for sure. You also need to correctly wire in the vtec from the ecu to the shock tower, as well as wiring in the knock sensor. If you search this I promise you will find it. Good luck!

 

why can't I use jdm motor and jdm wiring. The only thing usdm is shell? I've never heard this before. Anybody know if this is true

 

everything on the jdm harness is backwards. Its not a matter of NOT being able to use it but, why go through alll the trouble of rewiring everything when a usdm harness making it alot easier on you? Plus the 2000 type r harness is obd2 and you are trying to fit it on a obd1 car... wont work.

 

Money would be a factor. Where am I gonna get a usdm itr harness and about much do they normally run. What also could I do if I choose to use jdm harness. What would be backwards?

 

usdm gsr harness should work, if you can get them cheaper than the itr. the 99-00 b16 one will not work.

 

You dont need a itr harness , just use the one that came with the car and run your vtec wires. I would suggest you read up on engine swaps alittle more. Theres many threads covering these thing you just have to search.

 

I have done my research. Nowhere on any thread does it say I can't use my jdm harness. Please show me where it states what I'm asking. What needs to be done to use my jdm harness. A gsr harness is over 200 bucks and that's not an option. Can I use the old harness from an auto 94 civic on 2000 manual or do I need to buy conversion. I'm looking for help people not s..it talkers. Useful help please

 

You can't use the JDM harness, as already stated. With the RHD car, the ECU is on the other side (left side) of the car. So the engine harness runs along that side of the car, to get to the ECU. Being that the harness is routed to that side, it won't be long enough to reach the right side of the car, where your ECU is in your LHD car. Let me put it this way, to try to make it clearer. The wires for the sensors on the right side (transmission side) of your stock harness are pretty short, because they don't have to go that far to get to the ECU, since it's right there. The sensors on the left side (timing belt side) have longer wires, because they need to go all the way around the back of the engine and then to the ECU on the other side of the car. With the JDM RHD harness, it's the opposite. The wires on the left side (t-belt side) are shorter, because the ECU is on that side of the car. The wires on the right side however are longer, because they need to reach over to the opposite side of the car. Hense the wires for different sensors are too short on 1 side, and too long on the other.

Now your next problem. You could either get a USDM '96+ Integra engine harness, or you could modify your stock harness. The major differences between the 2 are the plugs for the distributor, alternator and injectors. If you want to use your stock harness, here is what you can do. Injectors are an easy fix, just use your stock Civic ones. For the alternator, either buy an OBD1 B-series one or you can swap the voltage regulator from the stock one, into the ITR one. The voltage regulator is the part with the plug on it, and if you get a service manual (which you should have one!!!), then it will basically show you a step by step process of swapping them. As for the distributor, either buy an OBD1 B-series one, or swap the guts from the stock Civic one into the ITR one.

 

What would I have to do if I keep my old wire harness from auto 94 non vtec and I just bought a chipped ecu from pharable or somewhere that includes vtec. Would I need to change anything on motor

 

Thanks that clears things up for me

 

I have a cousin who does everything electrical for a living, stereos, alarms etc. Could I just get him to extend all the wires, I know it's like 50 wires but could I go that route so everything is fully jdm. Just have him extend all the wires to reach the ecu. Is that an option?

 

much easier to just use your d series harness

 

I don't see how using my d series will be easier, I would to swap voltage regulater, swap internals of distributer and switch injectors. This is my first swap so maybe this stuff just sounds harder than what it is, but doesn't it sound easier to just extend the wires. I have dashed pulled out so it's just a matter of matching the wires. Help me out. Which route is easier. Keep in mind I'm out of money. Spent everything on motor and shipping

 

Ok...I thought about what I would do for a bit here...It will not be easy to "just to extend the wires" from your jdm harness. Also, you would not be happy with the finished product. If you had the money to get an itr swap, just spend the extra money and get an OBD1 gsr harness or del sol VTEC harness (B16). Good luck!

 

I wouldn't use my d series harness to extend. That wouldn't make sense, the d series is already correct length. I would use my jdm type r harness and extend it to make it for LHD to extend to ecu. Is that possible?

 

ok...so now I see you have no money...with what you have I would use the d series harness and pieces of the JDM ITR harness to extend certain areas. Then you will need to wire in vtec and knock from the ecu directly to the engine to make it easier on you. Alter on you can wire it from the ecu to the shock tower and get an OBD1 gsr or B16 harness. Good luck!

 

I'm not seeing why I wouldn't like the finished result after extending. Wouldn't it bebehind the dash, so who would see it. As long as I make sure all the wires match up and have secure connections it should be ok. Am I correct?

 

You have a firewall harness? Take pics...you are confusing the hell out of me at this point. I have had civics and integras apart to bare sheet metal, and I am pretty sure this is not feasible...

 

if you dont believe that using the D series harness for a B series swap will be easier then you should do more searching on here..if you wanna cut and solder all those 30+ wires then go rite on ahead its your car and motor..we are just tryin to help you out and make things easier for you

 

I have done my research, all over the Internet, here club civic, team integra. I have my dashboard took off. I have the type r motor installed already I haven't taken out the d series wiring, that's what I'm doing this weekend, that's why I'm trying to get this clear by then. I get that the full wiring that came with my motor that is from japan is made for a right hand drive car. My question is can I just extend those wires to fit my LHD car, and what goes to the shock tower? And what is the shock tower? I'm not trying to argue, I'm trying to get my type r car rolling. You guys are turning this into a whole new conversation.

 

is there a reason for taking our ur dashboard?

here is a pic of the shock tower
http://www.c-speedracing.com/howto/b...s/dsc00048.jpg

i have yet seen anybody cut and solder the RHD harness to make it fit so take a picture of your engine bay when your done, i really would like to see it lol

 

I took dash off so when I run the wires thru the firewall it would be more acessable. I don't know if that is right. Like I said I haven't uninstalled the old wiring or installed new wiring. I don't see what would be ugly about running the wires this way. When the harness comes thru the firewall instead of it going to the driverside I just route it to go to the passanger side. Why does it sound hard or ugly

 

all i gotta say is WOW and yes you are making things much harder for yourself..good luck

 

Well maybe I am. I just don't see the sense in replacing type r parts withbd series parts when I could just extend 30+ wires. I can't believe I'll be the first to go this route, but I'll show you guys pictures, and I'll even do wire tucks if it does look ugly. It can't be that bad,