Necessity of Wiring Harness Service

[jus2shy]

OK, I did utilize the search function, found lots of info on how to do wiring, but what I was wondering is the necessity of it.

Currently, I'm shopping for a 95-96 240sx. I've also been researching a lot on the SR Swap. There was one thing that has left me foggy though.

I keep reading how everyone has been having some sort of wiring harness service done. I was under the impression that if you do order a motorset, and it comes with the uncut wiring harness, you didn't need to have any wiring harness service done. do you need to perform any adaptions to the SR wiring harness, so that it will work with your US stuff, like your gauge cluster or anything else? This has been kind of ambiguous to me, because I don't know if this service is a necessity. Thats my only question

Thanks in advance

[Drakon]

Umm.. cut wiring harness is suposed to be a biotch to work on. you deff want uncut. but you still have to do some lengthening and shortening with a uncut wiring harness. everyone says its the only hard part about DIY swap. the KA and the SR20DET are different so its not like with an uncut harness you just plug in and go. you still have to change things. I'm gona pay someone to do my harness. i dont wana take on that thing it scares me. I would say, unless your a real DIY type of guy or have no money, get a service. but thats just my opinion

[ride4lame]

Basically the stuff that needs to change is because one motor is for a right hand drive car(the sr) and the other is for a left hand drive car(the ka) so the lengths of the harness are sorta opposite. Also the wires that go to the gauge cluster are a different length. I paid heavy throttle to do mine...like Drakon said unless you really are broke or are gung-ho do it your self, then i would shell out the 100 bucks to save all the soddering and lengthening

[jus2shy]

ok, now I totally understand why you still need to get your harness serviced no matter what.

Thanks a lot guys, you totally lifted the fog on why to have that stuff done. After reading your replies..... I am definately going to shell out that 100 or so bucks when I finally get my friggin car!! I'm going shopping this weekend for my car, hopefully I can find a good one .

I've also been making a list of stuff I want to do or will need to do in order to perform the SR swap, and this is just one of those things that I felt really needed to clear up. Well, there goes upping my budget up another 100 or so bucks, and another thing to add to the TO DO list :rolleyes

Thanks for your help

[Drakon]

wondering if u read a post called total costs involved. u should check it out if u didnt already. we were talking about necesary stuff.http://www.nissaninfiniticlub....ber=1

[jus2shy]

oh yeah, I've been reading that post, I think it was started by LemHead? I didn't see any mention of the necessity of the wiring harness service, thats why I asked, and that thread also influenced my To Do list a lot

[240_Keyy]

I did my own wiring, soldered and shrink wrapped every connection and it took a total of about 6 hours from start to finish. Not to bad if you are at all handy with a soldering iron...

[ItzGenX]

Umm, remember he said a 95-96' 240SX. If you are talkin about dropping an S13 Red/Black into a S14 chassis, then the wiring will be totally different then that of the 89-94'. The wiring service also ranges from 200-300 for the 'hybrid' swap. The reason being is because the S14 has a totally uplifted wiring scheme compared to the simplistic S13s. A/C is also harder to get working with the 'hybrid' swap, and I have still never researched enough information for the air conditioning in an S14 with S13 red/black. No one knows or will spit the information out about it besides "fabricate lines to use SR compressor"(i think the KA compressor is fine). Anyway, yeah, it will cost you more then a meer 100, add 200-300 to your budget list.

[jus2shy]

I remember some mention about the different wiring schemes between the s14 and s13. I was thinking of just getting an s14 motorswap though. I should be okay in that case with just some basic Harness service correct?

[MojoMan]

I have a 96 240 and a red top. The wiring doesn't have to be altered much at all. Im using my ka harness. Only a few connectors and such have to be reworked. Also you can use your ka a/c compressor, you just have to only use two bolt to hold it on instead of 4. It holds fine.

[ItzGenX]

S14 to S14 harness service is also in the 200-300 range.

Mojoman, I plan on just running dual harness in my car to save myself trouble. The KA harness will stay in car with the exception of a few wires of it being spliced off onto the SR harness. That way, I won't have to rewire the acessories and such. Also, the a/c should work like this.

[jus2shy]

Yeah, I just went surfing the sites and found the prices to still be up there. Oh well, still something that needs to be done for the swap

I'm hoping by winter I'll have the funds to pull this stuff off. Its also nice to know I can use the KA A/C unit, thx for the tip

[austin240sx]

is there a website that shows which wires on the redtop harness need to be lengethend/what modifications need to be done? or is most of it going to be common sense?

[Cattalbus]

i belive the austrailian page has a link to it. http://www.silvia.hl.com.au/techinfo.asp

[Cattalbus]

this page has what you'll need. http://sr20.hybrids.jp/install....html

[austin240sx]

thanks for the info-cept im going to put it into a s13. im pretty sure i can figure it all out-if not THEN ill pay someone else