Hey, what do you do with the "RPM" wire from the coils? Just tie it off to ground? I thought the Link got RPM from the CAS, same as the stock ecu.

 

what year? I refer to this as the tach wire. I explained to tie them all together and connect to the tach signal wire in the mazda harness. see schematics posted.

 

97 with an obiwan link

 

'97 has a single tach wire in the miata harness. it's split into 2 wires, one wire to each tach output on the oem coils. connect all 4 cop tach leads to this wire as shown in the schematic.

 

Oh wait duh, thats what the 3rd wire on the coilpack is.

1 Power
2 Signal/Ground
3 Tach

Correct?

 

Are your coils on top of the valve cover? If it's a 3 wire there is no tach. I don't have the colors for that but the 3 would be power, ground, and trigger.

Ben send me the link to the '97 schematic. I dont have time to look for it this second.

 

update for aug 7th

 

Since we run wasted spark 1/3 2/4 why not just figure out a way to shoot on the individual coil alternating for every firing order i am sure there is the ability for this some where it would mean running a few more lines though i think.

 

wtf indeed. didn't someone post that same statement in another of lazzer's threads on miata.net? heh

Oh btw, you can get narrower spade connectors. probably fully insulated. just gotta search digikey. they're called quick disconnects or terminals.

 

Got the coils epoxied last night and test-fit everything for lengths. One thing surprised me... Up until now I'd only test-fitted a coil into the #4 hole, and it was fine. But to make them fit into the #1-#3 holes, I had to grind down a pair of rings cast into the body of each coil as per the illustration below. Have others had this experience as well?

 

Mine don't have those rings. Just as my connector isn't 180deg away from the bolt down area.

 

I just got the coils from brgracer.
Pls. verify that the pin out is as posts 175 and 178.

Since I got 4, I"ll test them all out for health. Give me a few days to test 'em against the other coils I have.

 

No, I think we're running 1/4 2/3, at least that is what the coil pack and wires on my table says to me.

I really wish I was an electrical engineer instead of a programmer so I could make a little black box to convert the wasted spark to full sequential.

 

I don't think it would be tough since these cops have built in ignitors. I would attempt, but Joe Perez is much better qualified.

 

You could use a flip-flop IC as long as you had a reset pulse from another sensor. The Miata CAS has a 4 tooth and 1 tooth wheel with an output from each. The single tooth output could be used for reset. I wish I had the time to work on it but right now I don't.

SOL general... Were waiting on you. If you can't make the deadline on Thursday then let someone else take your place. I'm pretty sure I'll be able to offer this deal again soon but for now I only have 24 coils to distribute.

I went to the junkyard today and looked at every Toyota they had. Nothing new. But... With a little widdling you could probably make one of the other connectors work. It was either the wasted spark coil connector for the wired coils or the airflow meter. I don't remember which it was. The pin spacing/size was the same but the outer plastic part of the plug won't clip on the COP coils. Anyone want a go at trying to make it work? I'm sure you could rtv/glue it in.

beerslurpy - payment recieved.

 

update aug 7th

 

hey can someone take a good quality close-up of both the coil-side connector and anyone who has the real mating connector take one of that and any writing on it?

I'll do some lookin too.

 

Brian was supossed to for me....

 

I tried, just my camera sucks too bad (Christams gift from family, GF destroyed my good camera in an auto accident). But if you look through this thread, I gave some measurements at least...