okay i am having some issues

read the wiring info here:
http://www.club-s12.org/forums/index.php?s...c=25320&hl=


im confused of WHERE to start, like picture one, etc. those connecters you have shown, i CANNOT seem to find them on my 1984 mk1 datsun 200sx. where should i be looking? most of the wires dont seem to be the same as the DE, its kinda confusing


my engine turns over, and the injecters are working, and my fuel pump is hooked to a switch


i basically just added power to the orange wire or whatever by tapping into the WHITE s13 connecter that goes inside of the dash



what controls the ignition exactly, im at school i cant see the pictures right now to reference so my info might be off some



oh an also, having a fuel pump directly hardwired. will that shorten my fuel pumps life? in comparison to using it off the ecu

Moved this to your own thread of questions, if Sterling thinks more needs to be added to the other thread, he'll prolly do so.

Do don't see why wiring the pump directly should shorten the life.

i wanna say ign and injectors are the same 12+, if not supply power to the coil, and maybe the CAS
hardwired fuel pump is ideal, dont mess with it

hardwire is fine.

The S12 connectors as pictured would be located underneath the airbox on a stock S12, which is something I need to add to the how-to.

The S13 connectors are 1) by the ECU connector, and 2) on a long extension coming off of the harness. If you routed it same as S13 stock, you'll end up with this extension by the battery. Then you'll need to extend the main batch of wires from the drivers side (S12 connectors) to the passenger side (S13 connectors) to make things lay out as they were originally. I can get more detailed if necessary.

okay,



so the extened longer batch of wires from the S13 engine harness, AKA brown connecter and friends,

will be extened to some area underneath the airbox, to the s12 body harness



picture under my airbox at my mess


is it one of these connecters? is it the one located in the PALM of my hand?

i know i know, i need to go back and read more, its kinda late but ill keep looking 4 it




QUESTION

the ignition coil, will the stock s12 coil located by the power steering resivor work with the s13 engine?






and, with the big white s13 connecter, (orignially located inside of s13 connecter, i sterlings pics its brown)

im still kind of confused as two where those meet up with the s12 harness, is it inside the car?


so far i basically have the big white connecter, from the s13 harness, i hooked up the main ones


i think i have my ignition coil not hooked up right, therefor not making my car have spark?


AND

do i connect the coil to the BODY harness, or the ENGINE harness

those are the connectors, its wierd that they're tan though.

did you get a coil with the ka? im sure you could use the s12 coil, you'd have to splice and sotter though.

on the s12 its connected to the engine thru the body harness. thats the easiest way to understand it. the ka gets power to the ecu and then sends power to the coil. there should be another plug near the ka maf plug that is for the ka coil. no connections to/from the s12 what so ever for the coil when going ka. hope that helps.

why do i have to splice and solder the ignition coil?


the connecter you speak of, by the MAF on the s13 harness, fits perfectly in with the s12 ignition coil


but so does the old, s12 body harness, thats why i got confused


so, ill ditch the s12 body harness ignition coil, and hook up the clip off the s13 harness



here is the s13 harness connecter that was originally located on the passenger side, INSIDE THE CAR

where do they go in general, inside the s12? or engine bay




here is the two connecters located from the S13 harness, that i found in the 240's engine bay, on the PASSENGER SIDE

i will be extending these, to pair them up to the connecters in the palm of my hand in my previous post



AND

here is the clip from the S13 HARNESS, that looks like it goes to the STOCK s12 ignition coil

even though, the s12 body harness has the same deal

im only speaking in declarative because im thinking aloud, if im wrong, please do tell me so

1. okay they coil looks like it will work. i didn't think the connectors were the same

2. the ka connector inside.... the start signal will go to the engine bay. the tach you can jump inside the car behind the s.m.j,(super mutiple junction-behind the interior fuse box). look in my build thread for that, i just added that. im still trying to find the temp gauge wire so that also can get wired inside the car

3. yes, extend those and seal them up nice too

fell free to ask all the q's you want.

ahh okay ive been so damn confused since i didnt have internet to ask pic questions and stuff

i just bought a fuckload of solder and colored wire, all i have to do now is just follow the wiring guide

thanks for the help, ill have more questions tomorrow night when i get off work and on the car

sounds good. before you sotter anything make sure its correct.

i shall, ive gotten alot bettering at soldering now btw, thanks to sterlings thread lmao. but yea, im going to probally NOT solder, and just twist wires together, and once the car starts, ill tuck them with extra length and finally solder

I cannot view any of your pics, and my current net connection has major issues, so what I got out of the questions, think silvialove answered them all, but its easiest to use S13 coil.

anything connected to the S13 harness that is S13 should be reused, and the three connections between the S13 chassis and engine harness should interface with the s12 plugs.

DO NOT LEAVE THE COIL CONNECTED TO THE S12 BODY HARNESS. IT WILL DO YOU NO GOOD...

any other ?s just ask, one of us can help out...

id rather solder bad connections and cut/ splice in more wire than twist shit up, the problem with twists is you have a good chance of shorting stuff out if the wrong stuff contacts each other

okay cut a hole and put ecu inside car




and i run orange to the + terminal


but the black, can i ground it inside the chassy? i sanded off the paint and screwd it down



expect little updates within the hour ill be walking through this SLOWLY

what else,


on that WHITE ecu clip, should be added to the + terminal???

??

can someone explain what i can vitally just hook up to get the car started, and do the tach and stuff lke later, im kinda stumped loking at those wires, i got a few hooked up, etc. but still not sure what bi need to hook up for IGNITION, because im not getting spark

what does the plug that goes into the alternator do

for the alternator one wire is for the cluster to light the brake/battery lights up when it goes out, and the other wire is for a 12+ v source (so it knows to charge the battery)

the coil main power source should be a fatass black/red stripe wire, is your ecu getting power?

my friend told me he could feel the injecters firing through a screwdriver as i turned it over

the coil is hooked up to the ecu, the plug i mentioned



i have to buy a s13 coil, but instead of the s12, which is like 30 bux, im getting prices like 80-90 dollars

can u go to a yard and find one??just pocket that sucker if you find one

yea i guess. its just kinda hard to get there without a liscense, i pick up 75 percent of my stuff at autostores on my moped

oh yeah no license.so you get driven to the track in your own car??now thats addiction to driving.lol

haha yea i find people. i have a restricted for work, but no where else

so hows that swap coming?wirings a bitch.

nned ignition, could it be the nuetral saftey switch, what does that do










i do have a problem of concern, when the KEY, is in the car. like at idle where you stick the key in



ALL of those dash lights come on, and when i click the key 2 times forward, they turn off, and then obviously i click it all the way, car starts turning over




i thought, those dash light, etc. come on, when you turn the key. i feel like mines backwards

if you dont have an s13 coil and ignitor, thats probably your answer right there. neutral safety shit does nothing

ignitor?

something like this, im honestly not even sure if the ka24e's use them. 91-93 KA's do though for sure. my 95 doesnt have a external coil or ignitor though, i ono

ooo looks very interesting


lol let me go with the ignition coil first, something tells me a s12 coil wont work on a s13, becuase the prices of the two at autozone are way different

Don't go to auto zone. Go to O'Reilly's

what the fuck is oriellys

its a southern thing

ka24e's have a ignitor. david, remember the plug on the s13 harness for the coil? the ignitor plug is right next to the coil plug. you wont get spark without it. there are NO wire to hook up for the ignition system, just power up the computer, grounds and it will control everything for you. let me look for a pic of my ignitor. it sits on the same bracket as the coil.

s13 ka24e ignitor......

oh damn my coil is different, i think i have a DOHC, will that not work? does DOHC have one? lol


hmm.

there is another plug on the backside, dpwn where the spark plug goes. can i hook it up there, but cutting and splicing shit

hmmm could prob use the coil. check and see if the ignitors are the same. just find a plug that fits it, and cut it off something for cleanliness. nissan doesnt have that many different plugs usually

89-90 ka24e's were slightly different. that may explain the coil differences. just make your own connections, like rage said, the coil may work. the ignitor plays a more important role, so plug it in then figure out the coil wiring.

just by looking at the pics i see my ignitor ends in #02 where yours ends in #04. so we must have different year'd ka's.

maybe the person who owned it before went to buy a new coil, saw the price and decided to go to the yard instead. hence why it looks different.

i got the right clip at the yard,


what controls the ignition, wiring wise, can someone go through this very thuroughly

i mean liek every wire goes where, for the car to start



ill wire the sensors there, but i need all the essentials, especially ignition

on the ka, nothing really. the ecu controls the ignition. wire up the ecu with sterlings write up, which the wires he has listed are for giving the ecu proper and constant power. the ecu then decides when to send power to certain things when triggered upon start up. the ecu has a wire that goes to the dist. when the ecu is powered so is that wire. the ecu has built in relays. so just plug everything in(ka engine harness to ka) and they will get power if your ecu is getting power. sterlings write up is the best your gonna get, its pretty straight foward.

dude his write up doesnt make god damn sense, i can only spot like 2 of the wires that seem to be the right ones


this shit is making me so god damn furious

its fuzzy but here is the black and red wire,


so i link that black and red wire from the s13 harness,

directly to this black white wire off the coil, on the s12 chassis.



does primary or secondary count? this cord is from the one that sits across from the exuast manifold

RESPOND

use the primary.

there are 6 wires you need to connect to get the ecu to work. those are not including the starter and alternator wiring which turn the engine over and charge the battery.

those 6 include...;....from s13 harness...
1.red-constant ecu power-memory
2.black/white-12v from s12 ecu relay when relay gets power...switched 12v
3.black/red-12v supplied by ignition(key)switch
4.brown-12v for sensors-fused power
5.black/yellow-12v for air reg.
6.orange-12v start signal, only gets power when key is on START position.


the 6 wires from s12 plugs under maf.......
1.black and white, not the coil blk/wht....constant power all times to ecu memory
2.lt. green/blk....12v out to s13 wire when relay is triggered
3.blk/wht at coil, turns computer on 12v ignition switch
4.brown 12v out
5.,black/red 12v power for air reg
6.black/yellow- start signal. sends out 12v when car is started.


just match 1 to 1, 3 to 3 and so on. you have the wires i seen them in your pics, they are the plugs under the maf. just splice directly to the s13 harness. we will work the feul pump later, just get the ecu power.

thanks, thats exactly what im looking for. just what i need to see if it starts

okay i found them all, and have them labled,


ECU wiring has 2 brown wires, s12 i only see one, can i just connect them together?

BLACK AND YELLOW, on the S12 harness goes to WHICH orange wire? the one INSIDE the car? i have that hooked up to 12 volt power..

OKAY, i wired everything up, but the black and yellow wire oin the s12 harness since no one answered my question




when i turn the key, the car turns over, and then every like 4 to 5 seconds theres a loud POP that comes from the exuast (no downpipe or cat)

hmmm, so, the S13 ecu orange wire (located INSIDE THE CAR), is connected to my 12 volt battery, do i also, bridge it with the BLaCK/YELLOW WIRE?

black yellow= #6 s12 on silvia loves list

dont give the orange wire inside constant power.no no, its on suppose to recieve 12v when the key is on the start position for the brief time during starting. it just tells the computer to compensate for start-up. just connect the orange directly to the black/yell. the blk/yell sends power to/thru the orange.

the 2 brown wires are right next to each other on the s13 plug. the one that was on the outside of the plug is 12v for the sensors, which is the one that goes to the brown wire on the s12 plug. the inner brown one is for the power steering pressure switch, which when you turn it tells the engine to idle up so it doesnt kill the motor. thats optional. we can get into this later.

you did take the engine apart and put it back together right? sounds like your timing is messed. to far advanced i think, that or your firing order is wrong.

hmm okay, the s12 black yellow color hooked to the power turns the engine over lol


so, i disconnect the orange from the battery, and run it through the firewall, up into the engine bay all the way to where the old MAF and connect it to the black and yellow wire


i cut the plug, i dont remember where the brown wires which plug they go into




i never tore the engine down, the engine timing is correct, i had a friend double check. but the ignition timing could be off, im not exactly sure about that


im off to purchase a distributor cap and rotor, might as well there pretty cheap




so, if the BROWN wire is disconnected (for sensors)

WILL the car start, yes or no



so that loud pop, has to do with me having spark working, right?

mine runs without the brown wire connected. im sure it has some ill-effect. i still need to sort that same issue on mine. give 12v to both, disconnect one at a time and see if the idle changes, when it does change thats the ps pressure switch.

im guessing that pop is the engine backfiring. id have to hear it to really tell ya. it could be the compression just relieving itself every rotation. take a plug out still connected to the plug wire, touch the spark end of the plug on metal and have someone turn it over and see if you are getting spark. is your pump wired up? all the engine needs to run is compression, fuel, air and spark. go over those things.