So finding a (full) wiring diagram for a Toyota echo isn't terribly easy so If anyone can help me out with finding one (or just telling me which wire means what for the plugs) I'd greatly appreciate it...

It's in the thread somewhere Sean. Sorry I missed your call today. The connectors should all have the same color wires on the plugs except for one. That's the trigger. The others should be Brown (ground), Black/white (12v), and the other smaller one that matches on all four is tach.

Splitime, jump on those plugs Dhaark has.

I've got the coil/ignitor/plug part... he said he'll try to source connectors. Connectors are what I'm currently lacking.

The colors on my connectors aren't the same as the ones you've previously posted about. Therefore, me=slight conundrum... again <_<

my colors are different as well, but the wires are most likely the same left to right as his are.

Bring one over we'll plug it in my car and see if it runs.

honeydesean now has COP working on a 1.6 Miata. Tach works fine, all seems well. My original wiring schematic -might- have the tach and trigger reversed. I don't know if this was my error when I made the schematic or if his coils had those two pins reversed. I will verify it as soon as I can. Untill then try to find the schematic for the car your coils came off of.

What kind of connectors?

The connectors for the COP.

Ok the tach and trigger wires ARE backwards in my schematic (on the COP side). Sorry. I can't attach pics anymore so I can't edit the original post to attach the correct pic. Maybe someone would like to make a donation to Philip for me so I can continue to offer my input. After all. no one is paying me for figuring this out. =)

lazzer, for clarity, you're referring to the pin out for the cops, right.

how did you end up wiring the tach in? leads from all 4 cops? or just 2? did you isolate with diodes?

sean, you owe us some pics dude!

my COPS are on my way to the house as we speak...

<edit> you got your post up as I was writing mine.
upload your diagram to imageshack.us and provide the link

1.6L_COP_Schematic
Attachment 216181

1.8L_COP_Schematic
Attachment 216182

1.8L_newer_COP
Attachment 216183

Please note on the 1.6 an extra ground -should- be added to keep noise levels in the wiring harness to a minimum. I'm assuming the COPs have the secondary winding grounded to the ground pin. Just add an extra length of wire (from where you tie the coil grounds together) directly to a ground on the head.

Tie all the tach leads together. No diodes. That's how I did my 1.8 and how we did Seans 1.6 and it's working fine. It's not as complicated as it might look. When your coil harness is done you should have 5 wires to connect to the old ignitor terminals on the car.

On your COP harness (for 1.6)...

1- Tie all the power and connect to Miata 12v ign. (blue)
2- Tie all the grounds and connect to Miata ground (black) with an additional ground at the head. Keep it short.
3- Tie all the tach leads and connect to Miata tach (black/white AND yellow/blue together)
4- Tie triggers 1&4 to Miata trigger (brown/yellow)
5- Tie triggers 2&3 to Miata trigger (brown)

Use 12ga wire for power and ground.
Use 16ga wire for trigger and tach.

That should be it. :bigtu:

Great. Thanks. One last question, about the COP pinout. What is the pin out, looking at the COP's terminal, left to right, with the spark plug connector facing down? That is the only thing unanswered by your write up.

http://img525.imageshack.us/img525/2927/coppinsar7.jpg

Thanks for your help Lazzer.

B

https://www.miataturbo.net/forums/sh...6&postcount=14

Was answered along time ago. ;)

Oh btw Ben, Sean has pics, just not posted yet.

Thread got big. Thanks.

For others
1 ground
2 trigger
3 tach
4 +12V

Look forward to the pics. Jerry made some adjustments to my MSPNP yesterday. As soon as we verify that everything is good with the stock ignition and current MS settings, the COPs are going in.

I still need coils and connectors. Also looking for confirmation that this will actually help under boost. Does this mod actually help with high rpm/high boost ignition problems?

Yes it should help under all conditions and allow larger plug gap. It removes the plug wires, their electrical losses, as well as the need to ever replace them again.

Definately worth a shot at $60, before spending many hundreds on a fancier solution.