CA18DET swap wiring question

[newtonty]

I am currently 90% done my CA18DET swap in my 1989 240sx, after checking the spark there wasn't any, the fuel pump turns on and the engine is receiving fuel. so after looking into it further i noticed i completely overlooked a plug inside the car before the ecu. the problem is, the connectors are totally different so i cut the one off my KA harness and cut the one off the CA harness and now i notice there are 9 wires on the CA plug and only 4 on the KA. All of the colors are different except the yellow with green stripe. I know this seems like a classic search question, but after searching everything i can really think of i cannot find a single thing. it seems as if no one has had this problem yet. On the FSM for the CA18DET it is F3 on the EFI harness (LHD model) F1 (RHD model). according to this it connects to the engine room harness, the problem with that is the harness has a different plug. It may be my only problem so a speedy reply is appreciated. thank you, and sorry if it is an easily searchable question i just don't know what else to look up other than "ca swap wiring problems" and "ca swap wiring guide" i have checked the SR20 swap guide and unfortunately it says nothing about this.
could this possibly just not matter? or could this be my problem.
i've checked over my dash connector wires the orange one was connected, i tried disconnecting it and reconnecting it and nothing changed. ALSO i do not get any sort of warning lamps on my gauge cluster, if i turn on my headlights the gauge cluster lights dont even come on. what could this be? i'm thinking the cluster part could just be a bad cluster because i just bought it from some guy off kijiji.
if i don't have any answers by tomorrow i'm going to buy a multimeter since mines broken and see if my ecu gets power.

[float_6969]

pics please

[newtonty]

i'll upload some pics tomorrow of the 2 connectors. my camera's dead at the moment gotta charge it. other than that i followed the SR20 swap guide exactly so if this plug is unnecessary i missed a wire or something. there was alot of wires to solder

[ca18coupe]

Post a picture of the plug you're talking about, just from what you said it doesn't ring a bell. If you looked on a SR wiring guide and it said nothing about it it should not be a plug to worry about as not every plug is utilized in our USDM cars. The only wiring you should be doing on the upper engine harness should be the connector going from the ecu connector to the dash harness, the two( I believe there are 3 on the CA harness ) connectors going to the headlight harness, and extending the MAFS and O2 senor wires.

[newtonty]

hey thanks for the reply. its a safe bet that this plug is unused. i soldered the one after the ecu plug, and the ones going into the lower engine room harness. but its still not cranking over, my buddy says there are 3 wires you have to solder in from the body harness to the engine harness. which one could he be talking about? i think hes talking about the knock sensor though but could that cause me not to get spark?

[ca18coupe]

The motor will still start without the knock sensor wired up.

[newtonty]

okay so that would be those 3 wires? so just to be sure the only wiring needed would be the dash connector after the ecu, the plugs that go into the body harness need to be replaced with the ka ones and the knock sensor. plus a few extensions of course. well what is a few things i could check? i checked my orange wire on the dash connector thats working, but i havent checked any going into the body harness because its all soldered and shrink wrapped and taped over. but on the inside of the car i only taped them.

[newtonty]

okay, i'm getting closer now. i tested the plug before the coil sub harness and there is a pulse when i turn it over so the CAS is sending a pulse. the ECU is getting power, and the injectors are too. i tested the intake manifold for ground it was grounded, however the block was not so i grounded that and still no spark. i can't test the ground that i just made from the block since my buddy took his multimeter back but i used an old battery lead from another car and bolted it where the AC goes and then put it between a sheet of metal and the body. would it matter that its a painted part? other than this i cant see why i'm not getting spark. the pulse to the plug before the sub harness is a very low pulse, so i'm thinking my igniter is not doing its job. i dont have it bolted to the body but i have the ground off it hooked up, could that be the problem?

[newtonty]

Okay, so the problem has been completely solved and i'm now getting spark. after getting the multimeter back i tested all the plugs going into the coil subharness and it turns out the Blue with red stripe wire was not getting power, after tracing it back i noticed i had it taped off with nothing attached. after looking at the swap guide i used (http://www.frsport.com/SR20DET-Swap-Eng ... _t_26.html) i realised that the blue with red stripe wire was on the list but did not say what to connect it to. which is why i overlooked it, after a bit of research i found out it needed a constant 12, thank god for the parts car. i pulled a relay out of a crap car in my yard and hooked it up to the battery, blue with red wire, and a pink wire because it was the first un used wire i found that gets power when the key is at the on position. i tested the plug with the key at on, i was getting a constant 12 volts. so plugged everything in with a spark plug out cranked it over got spark. unfortunately i didnt get to start it because i forgot there was bolts in the coil and when i pulled the spark plug out a bolt went...... directly in the spark plug hole. so now i have to buy a magnetic extender thing and fish it out. but thanks for your help, this is up here for anyone else having the same problem. and here is a better wiring guide for the swap. http://zilvia.net/f/engine-tech/293028- ... guide.html once again thank you for the replys