Ok, since there isnt an real good 18det wiring how to I have been going off how the ka/s12 swap and the sr/s13 swap wiring goes. Unfortunatly those write ups are all for the mk2. I need some mk1 help here guys. What colors have you mk1 guys with ka and sr swaps been splicing into what? For reference, here is like 3 quotes from me trying to figure out my wiring...i think i am pretty close to having it figured out as you will see from the last post, but I dont want to wire anything up wrong.
Indy and I where talking about this the other day...I belive, and I think he believes to that the write ups that we have have been written for the mk2 wiring. Anyways, I was only able to find 2 of the wires off of the three plugs under the maf. I did find all of the wires I needed tho from the 18det harness. Anyways...here is what is on my 3 maf plugs as far as colors.
Black
Black w/ white stripe
Purple w/white stripe
green w/black stripe
black w/white stripe
black w/yellow stripe
next plug out of the three
pink
green w/orange stripe
next plug out of the three
orange w/blue stripe
blue w/white stripe
green w/red stripe
brown
green w/black stripe (this is one of the wires I need to hook up to the 18det harness that color matches the write up)
bkack w/red stripe (again, one of the wires I need that matches with the write up
this is an pic of the three plugs in case anyone was wondering
and this is an pic of the wires I pulled off of the 18det harness in case anyone was wondering...I think I had an extra plug from what gerry said I should, but I still found all of the colors I needed off of the write up
Now, I said I have been using the old wiring write ups...basically what I mean is my brother and I took the information off of the sr/s13 swap and the ka/s12 swap...and to make sure I have this right...here is what we came up with.
S12 under dash, to CA18DET Harness
Tach Signal
yellow w/red stripe to yellow w/red stripe under dash
Speedo Signal
yellow w/green stripe to yellow to green stripe under dash
Ignition Start
red to red under dash
Ground
black to black under dash
AC signal
blue w/red stripe to blue w/red stripe under dash
water temp signal
blue w/black stripe to blue w/ black stripe under dash.
(now I havent cracked open the dash yet to start doing this...so there could be some wires that dont match up under there as well.)
S12 chassis harness to CA18DET engine harness
fuel pump relay
yellow w/red stripe to black w/red stripe (black w/red stripe should be on white plug underdash...not sure if we meant white 18det plug, or s12 under dash wiring, but I belive it is the white 18det ecu plug.)
ecu relay
blue w/red stripe to red w/black stripe (location under maf grey plug)
ecu back up power
black w/red stripe to red wire
main ignition power
blue wire to black, red, blue wire...(i think this is one where you have to link 3 wires into 1)
ecu power
green w/black stripe to black w/white stripe
Idle Air valve power
Any 12 volt power source to black w/ yellow stripe
o2 sensor
any 12 volt source to brown wire
neutral switch
green w/red strip to green w/red stripe (again, I think this comes off of the 18det white plug.)
Anyways...I am going to prolly go grab my mk1 fsm here and see if I can track down the right colors...but if anyone has any ideas, let me know.
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ok, I went thru the 20e harness and disected it with my fsm to help. Its an good thing I still have the harness and the ecu...but I had an wierd feeling that I was going to need them so I removed all the tape from the harness and set it aside. Now remember all of this is from an 85 mk1 ca20e...so dont freak out you 18det mk2 guys...since I know there is like 100s of you haha, jk.
first plug
Pin 1 = pink this goes to the instrument harness
Pin 14 = green w/orange stripe, this looked like it went to the neutral switch
2nd plug
pin 20 = blue, this connects to an blue w/white stipe wire and goes to an resistor
pin 17 = green w/red stripe, this wire goes to the dizzy
pin 7 = light green w/black stripe, this goes to an diode box
orange w/blue stripe goes to the ficd solenoid valve and to the instrument harness
brown wire goes to the ficd solenoid valve also, and to the fuse box as well
black w/red stripe goes to the fuel pump, the fusebox, and the efi main relay
3rd plug
pin 115 = light green w/black stripe efi main relay
pin 9 = black w/yellow stripe goes to pressure reg module/ac/ neutral switch
pin 103 = black which is the engine ground. (duh)
pin 108 = black/white stripe and goes to all four of the injectors
and I have an purple w/white stripe wire that goes to an plug...but i couldnt find in the power supply routing wire diagram where it went.
Now obviously...I need to know what systems I need to get power from, but from this I have found out which wires go to what systems...so I think someone should be able to help me figure this out. I dont recall if anyone has done an mk1 18et to 18det swap, so I dont know if the wiring colors are the same as the 20e...but if they are then I can do an all incompassing mk1 write up as soon as I figure out which wires to splice into.
Dont forget the cold start signal, the orange wire off pin no. 43 on the det ecu to a start only signal.
Your planning on wiring in new relays for the fuel pump and the coil packs right?
I havent seen the cold start signal wire in the write ups anywhere so I didnt know about it. If I can remember it I will make sure to wire it up.
I am going to put in new relays for everything I need to put new relays in for. As of right now...I kind of need to know what systems to splice into. I have an feeling gerry is going to see this soon tho and give me some hints. I see your car is an mk1...does this sound at all like the wires you had to deal with? Or is the 18et different?
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Ok, this image is going to be hard to see so you might want to save it onto your comp and blow it up...
I might be crazy...but I think it has the wire colors I need to run to the 18det harness...correct me if i am wrong at any point here.
At any rate, these are the colors it says i need:
blue w/red stripe...which for some reason doesnt show up on my 3 plugs. (ignition)
black w/white stripe which is pin 108 = black/white stripe and goes to all four of the injectors (ecu)
black w/yellow stripe which is pin 9 = black w/yellow stripe goes to pressure reg module/ac/ neutral switch (idle air valve)
Then I need to find an red wire for ecu memory, and 12 volt switched sources for 02 sensor (brown) and ecu (orange) (both respectively on the 18det harness)
So the only problem I think I have is the ignition...but for that dont I pull it off of the key? That would mean I just need the other 5 wires tho off of the 20e chassis harness and I have..6 wires off of the 18det engine harness:
Black w/yellow
red w/black
black w/white (which goes to green w/red on the chassis harness)
brown (12v switched source)
red
black w/red
hmmm, so i am thinking now
black w/yellow on s12(pressure reg module/ac/neutral switch) goes to black w/yellow on 18det (idle air valve power)
red w/black on 18det (ecu relay) what wire on s12 harness?
black w/white on s12(all 4 injectors) to black w/white on 18det (ecu power)
brown switched source
red on 18det to an power source on the s12 that is always on
black w/red on s12 (fuel pump/fuse box/efir main relay) to black w/red on 18det (fuel pump relay)
which just leaves the ecu relay and the switched sources and the always on switch...that is if i figured it out right...