Ka24de 510 Wiring Q's

[MicroMachinery]

Hey, I'm working on doing the KA swap into my 71 510. I recently stumbled upon a heck of a deal on the engine & trans. I got the engine(KA24DE) from a 91 240sx, pretty much complete, along with what was said to be an s14 5-speed. I also got a wiring harness with it. Upon mocking up the engine w/ the harness on the stand, it turns out that there is a 2nd wiring harness that hooks into my oil pressure, starter, alternator, and trans. My question on this is, do I need this harness? Or would it be possible for me to just feed these circuits off of existing Datsun circuits(I'm guessing not). And if so, what do I do about the 3 sensors on the transmission(I'm guessing they're a neutral/safety, reverse light, and speed sensor?). Also, am I going to need the fuse/relay boxes? I haven't seen anybody's car up close(or paid attention when I did) enough to take notice. I don't want to half-a** this, but I'm having a hell of a time tracking down a 91-94 240sx to get these parts out of. The electrical parts I need at this point(to the best of my knowledge), are:

-ECU-Lower Wiring Harness-MAF

I have the larger Wiring Harness segment that plugs into the Distributor, Fuel Rail, Throttle Body, etc.. but that's it. I'm not sure if there's anything else I need. I'm sure someone here knows EXACTLY what I need, and to whomever you are, thanks in advance.

Cheerio!

[zerepdivad]

You'll want the lower harness for the alternator to charge and whatnot. Starter you can hardwire to the 510's wiring though. Unsure of the alternator though. You shouldn't need any extra relays/boxes etc. You also can run the car without any of hte sensors to the transmission hooked up. *i'm only running speed on mine*

[chrissss]

Not sure if this is what you're looking for, makes for good reading anyway.

http://forum.ratsun.net/showthread.php?t=549