I'm starting the wire harness install for my project car. How do I wire up the ignitors and coils to the ps 2000 harness? The rest of the install looks strait forward.

 

Are the coils the same as the FC? I've seen the 3-rotor coil packs, but never the 2-rotor Cosmo packs.

 

today I was laying out the harness getting ready to start building the connectors tomorrow. got a couple questions.

what wires do I use
1. to control the OMP?
2. control the profec solenoid?


I think I am going to end up mounting the ECU in the glove box.

Im planning the O2 sensor at the end of the down pipe right before the cat pipe and running the sensor wire under the drivers seat. there is already hole there where the cat temp probe was.



lol a little cleaner

 

Send me an email and I'll send you a PDF on the OMP. ludwigmotorsports at insightbb.com

The boost solenoid had 2 wires. One gets switch 12V+. The other gets the DPO of your choice.

Never got a response from Haltech on the ignition wiring.

 

I have the 2 rotor cosmo coils here, they are basically identical to FC coils, just different connectors.
I dont have ignitors for them, but what he can do :

a) run either FC igniters or 13B cosmo igniters (if he will crack them open and see how they work, but it will be very similar to FC ones.....

b) convert to direct fire (4 individual coils - whenever its from 13BT or 13B-RE and either stock or aftermarket ignitors )

 

Well pulled out the 13B and put a 20B in. I would like to use the stock 20B coils and ignitors. I will bring a set home tonight and take them apart and post some images.

 

If you have access to the factory Cosmo schematics that would be even better. Even if the text is in Japanese.

 

LOL I remembered to bring the igniter home to take some pictures.

The JC Cosmo 20B cars have 2 igniter boxes both have same part number
NF01
131300-1801
12V





the 3 wires on the side
Black = C2
Green = C3
Blue = C1




on the top row left to right
Brown = +B
Red = IGT
Tan = A-LGD
Orange = -B
Yellow = TAC
Gray = IGF

 

If your setting up a 20b, your best bet is to get a couple of haltech 3 channel ignitors to use with the cosmo coils. The coils are supposed to be very good but the ignitors are not. The cosmo ignitors use a strange setup that has a toggle system. It doesn't just receive a signal to the channel that needs to fire like a normal ignitor, instead it gets two signals, one to fire, as well as a second signal to say where to fire. I was told that it has been done years ago with haltechs help but, I think they're too rare these days for haltech or any tuner to waste their time on. I worked out how to wire them only to find out that no one in Australia could tune the car and haltech didn't support them. In the end I had to install the haltech ignitors which were not very expensive anyway. Before you waste your time with them ask whoever is tuning the car if they know how to setup the cosmo ignitors. I think I still have the info from when I wired my car if you get stuck. Mine doesn't use the twin turbos but I think I still have the rest of the info to get it running.

 

Thanks for the idea about getting 3 ignitors. I think that I am going to go with LS2 coils with ignitors built into them for a cleaner install. I got some on order with C. Ludwig.

yeah the more read about the cosmo's coils they use a signal from the CAS + rpm to send one singal to the ignator then the ignitor fires the 3 coils. 1 to 3 ratio. Much more easier to just plugin a LS2 coil and be done with it. LOL now I need to fab up some mounting brackets for them. I saw some mounted under the UIM and TB makes for a clean install but I wonder about heat.

 

yeah the haltech can't fire the cosmo ignition, its too weird.

it basically works like the FC trailing, where there is a trigger signal, and a switching signal.

except on the 20B since there is a LEADING and TRAILING. the ECU sends a tach/trigger signal, and then to select rotor 2 or rotor 3 it has a toggle.

so to fire L1, the ecu just sends the tach signal. to fire L2, the ecu sends the tach signal + L2 toggle. for L3 its tach + L3 toggle.

the ignitor also sends a confirmation signal back to the ecu. the info is in the FSM/wiring diagram but its rather useless if you can't use the hardware

the coil is pretty normal, its just power and then rotor 1-2-3.

 

Im thinking about building a mounting plate under the TB and mounting the coils there for a cleaner install.

 

With stock coils its tight, but possible.....just measure carefully

 

I got my coils today. but looking at them I can see no easy way to mount them, so that they looks nice. the mounting points on the coils are in a strange location and put them in a strange angel. the FC coils look mounted nice your picture maybe I need to cut of the mounts and zip tie them place

 

Don't do that!

Flat aluminum plate and a bunch of these. Easy and clean.

 

just kidding about the zip ties I think hot glue would be better.

 

lol

 

Do you sell those type of bolts? I went to 14 hardware stores today here in okinawa with not finding anything like that.

well trying to figure out where I am going to mount these coils. I like the stock coils they are in a very clean package. I ordered GM LS/2 Truck coils with the ignitor built in.



found a piece of alum scrap that is the exact length of the rotor housing .... is it fate?



hmmm

 

There are plenty of them on. ebay http://shop.ebay.com.au/?_from=R40&_...All-Categories.

 

oh they are rc car / boat engine mounts. I will try a rc hobby shop

 

I get them from Mcmaster Carr. I can send you a bunch if you can't find them.

 

I found some yahoo japan $8.50 each
http://page14.auctions.yahoo.co.jp/j...ion/s165725865 $100 for 12 mounts
LOL this suck if I have to order them from the states my car is going to be down at least 10 more days.

I wish you would have said something about needing them when I ordered the coils from you.

 

If I say you "need" this, then someone else comes in here and says they did it with baling wire and duct tape, you didn't need to spend the money, and I ripped you off.

Another, easier to source option, is to use fuel hose or silicone hose as the rubber damper section of the mount shown above and a bolt through the mount. Or use aluminum tubing for a hard mount.

 

Sounds like your Cosmo survived the tsunami

 

yup we did have tsunami here in okinawa, but nothing like they had in mainland japan. I had some friends they lost everything they just got away.

yeah I understand about not asking if I need them. just venting I wanted to drive the car this coming weekend. heheh fuel hose, hot glue and zipties maybe some bedazzler beads too lol
did make some progress yesterday.
https://www.rx7club.com/showthread.p...2#post10515672

is there any base maps for 20b? just something to get it started and cruse around not boost.

20B CAS
stock fuel injectors
ls/2 coils
internal map sensor