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View Full Version : s14 auto to manual lower harness "pictures"


Ceepo
09-16-2009, 02:45 PM
Okay so i need someone to double check and make sure i have this right lol i think i got most of it right but i confused myself ha ha ha...

1. Do i need the plug that connects the lower harness to the upper engine harness?

2. Do i need the to wire in the neutral position switch and if so how do i do that?

3. Do i need to wire in the 5th gear position switch and if so how do i do that?

4. Do i need to wire in the ASCD(automatic speed control device) clutch cancel switch, if i understand this one right this is for cruise control right, i.e. when you press the brake/clutch it automatically turns the cruise control off...

5. anything else i have to add or do i am so confused lol...

Thanks for the help guys any info will be greatly appreciated...

Picture time...
http://c4.ac-images.myspacecdn.com/images02/64/l_1262e457a5d74210a555852ea3ef9a73.jpg

http://c1.ac-images.myspacecdn.com/images02/28/l_5de44a006d584a808efb2f47783003f0.jpg

http://c3.ac-images.myspacecdn.com/images02/31/l_903cb33d899f494197fc44ad1e6a9f6e.jpg

http://c1.ac-images.myspacecdn.com/images02/39/l_c3bd2cdf8c0041638cb748f0eaad1b88.jpg

Keep in mind that the large power wires are not on the harness to keep the harness simple to see and les confusing lol... can anyone ehlp me figure this crap out... also what are these sensors on a s13 transmission

http://c1.ac-images.myspacecdn.com/images02/75/l_2e9a8ada6c8d4a15867f4ef9c7b978d0.jpg

Reverse switch? ^ located on the front of the trans passanger side(towards motor)

http://c4.ac-images.myspacecdn.com/images02/54/l_a418611eca9e46dbb7b1d76b370874eb.jpg

5speed/neutral position switch? ^

http://c1.ac-images.myspacecdn.com/images02/94/l_f1dda53e2f514283bb3270e41721db28.jpg

VSS? Vehicle Speed Sensor(large cylinder with the wires coming out) pretty positive that is the VSS...

Again thanks guys :D

Ceepo
09-16-2009, 02:50 PM
Been using these write ups to help me along the way

Simone : My 1996 240sx: Lower Harness is done dilli-yo! (http://om1kron.blogspot.com/2009/02/lower-harness-is-done-dilli-yo.html)

S14 Tranny Swap - Electrical Connections (http://www.ka24development.com/cwilfert/S14_tranny_swap_electrical.html)

Heavy Throttle (http://web.archive.org/web/20070513175042/http://srownersclub.com/faq/index.asp)

//driftingisgay.com (http://www.driftingisgay.com/)

Ceepo
09-16-2009, 10:48 PM
anyone cmon i know someone is out there that can help, any info will be of great help to me...

projectRDM
09-17-2009, 08:55 AM
You do not need to do anything with the lower harness except hardwire the reverse lights (if you even want them).

But to make it simpler, unwrap the entire lower harness. The alternator, starter, OPS, and VSS will all be separate from the rest of the wiring. Plug all that back in (you can delete the OPS if you want, not really needed since the switch is likely leaking oil anyway) just like it was originally. This is all exactly the same as it was since it's engine related.

Now take the automatic portion of the harness coming from the fusebox, cut the reverse light wiring out from it and run it to the reverse switch on the transmission, connect them (there's no polarity here, either wire to either one works). The rest of the automatic harness from the transmission can be thrown away.

The plug going to the engine harness feeds the CPS and rear O2. If you still have these, plug them back in. Wrap it all back up. Done. If you've deleted these or have an SR/RB then throw it all away too.

You do not need to touch the neutral or 5th gear switches *unless* you're forced to pass OBD-II emissions, in that case you must hardwire them both to the ECU, the wiring doesn't exist in the chassis.

The ASCD cruise cancel switch can be legged off the brake cancel switch or just leave it, I always brake before clutching anyway when the cruise is on, if you do as well you don't need the cancel switch.

Ceepo
09-17-2009, 10:36 AM
Dude your so awesome thanks again man!!!!