SR Swap- Specific wiring Questions

[CMG]

I've spent alot of time searching this site but this is my first post. I'm in the final stages of swapping in an S13 redtop from a Silvia into a 1989 240sx hatch. I have the complete car and the complete clip so I should have all the parts I need. About to finish up the wiring harness and just wanted to make sure I'm doing the right thing. I have read lots of posts and gone to all the install websites, but they don't all say the same thing. Please tell me if you have advice, suggestions or if I'm doing something wrong. First off I will be using a proper solder gun, 10/40 rosin flux solder, heat shrink tubing and electrical tape. Now for the wiring, starting at the computer. I will be using the clip JDM gauges so I assume I can just plug the SR plug into the KA dash plug, or do I still have to solder the 6 wires together? Then, when I place the harness into engine bay I have to plug everything up except for the harnesses by the battery. I cut off the two KA connectors and one SR connector and splice the wires together according to the chart. I will be extending the MAF wires and power steering wires too. I have the dohc steering lines so it looks like I just extend from over by the battery to the other side. I also will be mounting the ignitor in it's proper place on the driver side, so I have to extend those wires too right? Last but not least do I have to switch out harnesses or plugs or the speed sensor for the transmission, or does it plug right into the KA harness? Thanks for the help.

[CMG]

I think I was confused on a couple things. It looks like i will still have to cut off the sr harness plug by the ecu and solder on the KA harness to connect to the dash even though I am using the jdm gauges. And by the battery it is 3 SR connectors and 2 KA connectors. And I will not be using AC or AIV so I don't need to connect those wires right? Will I also have to extend the wires for the O2 sensor?

[IDriveFords]

The reason for extending any wires is due to the fact that in Japan these cars are right hand drive (you know this im sure). Therefore; any wires that would be on the left hand side in japan making them closer to their respective plugs (the o2 is one of them) will need extending. So yea your probably going to have to extend it. The write up i used said to extend it about 2 feet; its only 3 wires so its pretty easy. If your not using this guide I highly recommend doing so becuz its excellent.http://www.frsport.com/sr20det....html

I think the wires you need to extend are as follows:power steering MAFO2

The ones you splice are the ones near the stock battery location where you take the 2 KA plugs and spice into the SR harness; one of the SR plugs is not used. Getting the AC to work (if your interested) does not seem to be hard. The AC compressor off the 92' and up model KA's seems to bolt up where the SR's compressor is perfectly then its just a matter of reconnecting the lines. I don't think theres any wire extending needed to get the AC working but I could be wrong.