I know that all wires can but cut and ran to change my dpfi, to a mpfi. And I am also sure its very possible to simply switch all the wiring out of my car and put in si wiring. But I'm wondering if anyone has done it and how much trouble they had. If there is a certain point on my harness that I wont have to take out that will plug right into the si harness. No I don't plan on putting a sun roof in. Just giving some more to the car tjhat it doesn't have. If anyone has any insight into this, please let me know. I have already searched. I have not seen any subjects on it at all

 

I can't believe no one has done this

 

The search function at the top of this page can be very helpful!

Use it...

 

Yes it can be done but it is a lot of work for not a lot of return and thats probably why lots of people don't do it.

 

Ive done it, I swaped the whole harness from a 89 dx to an 89 si, and lets just say that I would rather do an engine swap than that. It probably took about 5 hours to get the harness at pick-n-pull and then I still had to do it again on my crx.It will work and can be done if you want.

 

I suppose you don't read well? My post clearly states that I have searched and found nothing. I also did not ask how to do it, seeing as I'm not an idiot, I can't remove and replace. I simply asked if it had been done and if anyone on here had done it before. If you don't like my post you don't have to read it, much less post on it. I think that allthe questions that are asked whole already have. An answer in the FAQ. But the don't. It would make things much easier. Aside from that I plan on doing this. When I do ill be sure to make a post and see if I can't get it into the FAQ.



One of my questions was still not answered though. Is there a point on my STD harness that I wont need to take out that the si harness will hook right up to? Any idea on that "89crxjdmdohczc"?

 

I opted to swap in an unmolested si body and matching engine harness from a 90 si into my 88 std hatch. the front body harness is all you need, the rear body harness unplugs from the front half high up under the dash on the drivers side.

for ease of installation you do have to remove your dashboard, heater core, blower pieces, undo the lower tabs on the firewall pad so it can be moved out of the way, and for ease of installation remove your fenders to easily unclip and uninstall the door wiring. the sunroof harness from the si plugs strait into the fuse box, so no need to worry about that.

everything else plugs in like normal, UNLESS you're doing what i did, which was putting the newer body harness into an older car, at which point you have to change one plug on the rear harness where it plugs into the front harness, change your dash harness to a 90-91 spec or modify your stock dash harness to pnp into the 90-91 fuse box.

i used my 88's stock rear body harness and changed the plug, then converted my dash wiring to a 90-91 cluster cover with functional dimmer, rear defroster, and hazzard switches and eliminated the 88-89 setup because the newer is much cleaner imo and i'm running a gsr cluster so i needed the extra space.

 

I tell ya what..... that was a beautiful response! That's exactly what I needed to read. I'm gonna stick with the 90-91 harness. I will make sure to take pics when I go for this. Gonna have to install all the a/c stuff too

 

When i did my last one, i pulled the entire harness and swapped to a mpfi harness and added vtec and a obd 1 conversion. The reasoning behind swapping the entire harness was for a full tuck and i needed to be able to drive it also. I would guess around 40 plus hours total. That includes pulling the harness, obd-vtec conversion, dash and tucking

 

Have a write up on it?

 

Sure dont. Tucking a engine and body harness is a pretty straight forward process the time goes to cutting out all the plugs and add/shorten wires. I run my lights through the door wire access spot. All engine wirin goes through a spot i put in the fire wall under the intake so its hidden and all my rear body harness goes down the center of my car under the council and e brake cover that hides most off the wires cause i dont have any carpet.

The way i see it is if you are going through the hassel you might as well tuck it. My advice is do alot of homework first and the label everything. Oh and make sure you label everything. And before you start, label everything. That was my issue on my first one incase you didnt notice.

Dont forget to label everything