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  1. brads

    2G Which is the correct way to wire COP w/ CDI

    The manufacturers make some series of connectors specifically for interface with sensors. They will make a drawing of what the connector that is molded into the sensor will look like. And they will make the harness connector that plugs into the sensor. But they will never make the connector that...
  2. brads

    2G Which is the correct way to wire COP w/ CDI

    If the connectors are the same as the Toyota Denso connectors, they are Yazaki. This is one of the connectors for some Denso coils: https://www.corsa-technic.com/item.php?item_id=1067&category_id=55The male side to your 6 pin IPT plug does not exist, that I am aware of. It is like the 7 pin...
  3. brads

    DSMLink Wiring Advice

    Both of the MPI relay connector options are available. I don't know if one is more readily available than the other now.If you are making a fresh wiring harness to trigger a CDI, the PTU isn't needed. I always tell people that the PTU adds a little more noise resistance, so leave it in if...
  4. brads

    2G Found this silver box In My talon I just purchased, any idea what it is ?

    That plug in harness will probably have some interest all by itself. Those harnesses seem fairly rare, and I always see people talk about building them, but they are a hassle to get right. Can you post more pics of the way the big PCB mount connector is attached to the wires?
  5. brads

    1G Engine bay wiring repair questions

    I recommended the Hozan P706, but don't sell them. For a while, you could get them cheaper through eBay or Amazon, shipped directly from Japan, than I could get them if I bulk purchased directly from Hozan. Needless to say, I never bulk purchased, and just told people to check those sources. The...
  6. brads

    1G What kinds of metal connectors do 1G DSMs use inside plastic connectors?

    The slight variations of different terminals between the different series of connectors, make them incompatible. You may find that some terminals are shared between different series, but this isn't that common.I do source the terminals and wire seals too, and have been doing it for 20...
  7. brads

    2G No spark

    Check this post, it has many of the connectors identified. https://www.dsmtuners.com/threads/2g-dsm-engine-bay-electrical-connections.298047/page-3#post-151542343The blue one is the Engine Speed Detection, #53, The brown one is the fuel pump check These connectors are left unconnected in...
  8. brads

    DIY denso COP (no CDI required)

    Whether they are slightly better or worse than OE is probably going to depend on the application and condition of the existing components. But getting them to match the actual firing voltage of any of the available junk CDIs will be tough. Junk CD ignitions of all brands do a great job of...
  9. brads

    2G what type of pins should i order for ecu and other plugs

    Do you need the little rubber wire seals on the back of the pin, or are you hoping to reuse those too?There are a few common pins(male or female terminals is a better name) in the harness. The link to the 2G harness I gave can help you ID them, so you can figure out how many of each you need...
  10. brads

    2G what type of pins should i order for ecu and other plugs

    Molex pins aren't used in most of the connectors, I wouldn't suggest trying to make them fit.If you are going through the expense of building the harness, a few extra bucks per connector to replace at least the ones that are close to the engine and get cooked over time, is good insurance...
  11. brads

    2G Which is the correct way to wire COP w/ CDI

    Most all 3 and 4 wire coils are NOT CDI. The little transistor that is normally in the ECU(shown in the diagram I put up), is put into the coil assembly instead. But they still have to take time to charge just like the factory inductive coils.
  12. brads

    2G Which is the correct way to wire COP w/ CDI

    Since there still seems to be misunderstanding of parallel circuits, I am attaching a picture showing what actual coils in parallel would look like. Figure 1 is the 300M circuit. Note that the coil wire labeled coil - ( the coil negative) for the 2 coils does not connect. They are driven...
  13. brads

    DIY denso COP (no CDI required)

    Keep in mind that apparently several people are improperly installing the coils nowadays. Comparing it to an improperly installed system isn't very meaningful.There are a few threads where people talk about using 300M coils as COPs and wiring them in parallel. That is absolutely NOT the...
  14. brads

    DIY denso COP (no CDI required)

    Some of the LS coils people use in custom ignitions have a similar issue. If the dwell current is too high, they will fire prematurely to save the coil. The dwell reduction circuit you made is a good way to fix it. Lowering the voltage to the coils or a ballast resistor could do it too.
  15. brads

    1G Tach Question

    Why are you tying the 2 gates together? Shouldn't they be driven independently by the ECU pin 54 and 55?
  16. brads

    1G Tach Question

    That symbol is a shielded wire symbol, I believe. It just means there is a shield wrapped around the wire, and grounded at some location.
  17. brads

    1G Tach Question

    Good info. I've found in the past that using a signal generator to emulate a signal can sometimes have unexpected behavior with whatever signal conditioning is inside the target. Sounds like that was the same reason you changed around your test wiring. Using the signal generator to trigger an...
  18. brads

    1G Tach Question

    If you try to use NOR or OR gates on those 90 wires you will probably let the smoke out. Possibly in a spectacular fashion. The low side of the ignition coil switches to ground to dwell, and spikes up to several hundred volts when the coil fires. Most OR and NOR logic gates are not set up for...
  19. brads

    2G Can anyone fab a connector for 2ga to 2gb fog lights?

    The 2ga connector is a DSD 2 pin, The 2gb connector is a NMWP 2p. I do have them both in stock.
  20. brads

    2G 420A Harness rebuild

    Split loom used to be very popular for OEM stuff. And still is in some places. The biggest downside is that the loom acts almost like a sawblade over time. So it can destroy both the wire inside, as well as anything outside it rubs against. I saw OEMs use a tape similar to Tesa tape to wrap...
  21. brads

    1G 1GB Tach Not Accurate

    Is the engine running smooth, no misfires? I have seen the tach read wrong when there are ignition misfires.
  22. brads

    Sheridan Engineering Engine Harness Plugs

    Extreme has most everything in stock, JNZ carries some as well. I think I already spoke with you and handled this order though. If you aren't the person I am thinking of, email again.This is a side business, so I occasionally miss/drop an email, I apologize for dropping yours. If you...
  23. brads

    2G Harness swap/mpi relay issue

    The connectors are available now, to swap back and forth. But it'd probably still make more sense to just get the appropriate relay for the harness
  24. brads

    2G Knock sensor???? HELP!

    I have that male connector for the knock sensor, it just isn't on the website. But it is for sale. I've actually added quite a few connectors to the inventory, just don't have time to put them all on the site.
  25. brads

    Dynatek ignition issues

    Glad that I was able to help a little with some pointers, but it sounds like you figured most of it out on your own.Marty, The edge you use is pretty much just based on your ignition output. Your ECU puts out a signal to dwell and fire the coil. On a car with the PTU still intact, the voltage...
  26. brads

    Dynatek ignition issues

    Did you make any headway on this issue? The ARC-2 only has 2 channels, so I would expect a problem with a channel to show up on both of the coils, in this case 2 and 3. But the Haltech could produce timing that is off for just cylinder 3. I have heard of CAS issues causing a problem with just 1...
  27. brads

    Dynatek ignition issues

    It is starting to sound like the running problem isn't the box. I can't comment on the LED lighting up, I have zero memory of how the program was written and I know they did several changes to the ignition after I left there.You are getting a misfire on coil 3, but not 2? How did you wire the...
  28. brads

    Dynatek ignition issues

    Early in the development, the ARC-2 had some issues with triggering off an aftermarket ECU, where the ECU was only putting out 5V signals because it was driving a "smart" coil. Do you happen to know if the coil output signal on the Haltech is 5V or 12V when it is high? IF you can verify that is...
  29. brads

    Dynatek ignition issues

    I don't know the coil output settings on the Haltech. Is it set in software to directly drive a coil? And the switch settings on the ARC-2 are set as recommended in the install guide? Have you checked your timing?I'm not sure that the settings are your problem. But it can't hurt to step...
  30. brads

    Dynatek ignition issues

    The wire that goes from the coil 12V wire on the car, should be removed from the coil and wired to the orange coil 12V wire on the ARC-2 harness. This wire goes through the tach adapter too, so if you cut that tach adapter out, you need to make sure that wire is still connected to the ignition...
  31. brads

    Dynatek ignition issues

    Are you using the Dynatek plug in harness for the Eclipse? Or the universal install harness? If you are using the plug in harness, did you try swapping the tach adapter that is built in to that harness?
  32. brads

    2G Spark "blow out" after 5000RPM

    You shouldn't have that at 10 PSI. Not familiar with the ECUFlash/Evoscan. But if they have the ability to adjust dwell, or set it up for different coils, make sure the correct coil is selected. Does it happen at 5200 RPM even if you aren't at 10 PSI boost? Is the AFR calculated? Or is it...
  33. brads

    Help with this unknown connector

    I think that is the front O2 sensor connector, harness side.
  34. brads

    2G GSX O2 sensor connector

    While this is continuing the off topic discussion, I think it is useful to clarify what this is.Kryndon, have you owned this car since new? What that third pic looks like, is someone actually shaved off the index tabs. I see small marks where the tabs used to be, like someone cut them off...
  35. brads

    2G GSX O2 sensor connector

    Good question, not sure where that classified post went. I will have to see if I can update it.
  36. brads

    2G GSX O2 sensor connector

    Thats the fan connector. The o2 sensor connector looks almost the same, but is black instead of gray. It is keyed slightly differently so that they are not compatible. And it should be closer to the passenger side of the head, somewhere around the coolant neck/lines.
  37. brads

    PTU/ noise capacitor

    the PTU should be mounted to something to serve as a heatsink. Looks like the bracket you made serves that purpose nicely
  38. brads

    Push Button Start

    Without really diving into it too far, the obvious thing to do would be to just unplug the keyed ignition switch, and wire the new switches in right at that plug. That would keep most of the stock wiring(like the clutch/neutral interlock that prevents you from starting it unless the clutch is...
  39. brads

    2G Installed Coil-on plug, now it won't start.

    If it isn't the mechanical fit issue with the boot, you might want to reconsider that COP harness. It appears they wired the coils in parallel, not series.
  40. brads

    1G Any idea what this little board is?

    Never seen that exact board before, but that circuit appears to be a tach adapter type circuit, that takes 2 coil inputs on the left, and outputs a combined square wave on the right. It might have been designed for low voltage side of things though, just based on the spacing between copper...
  41. brads

    2G LED HVAC Unit

    I pointed it out because of another risk. It is(or was) a common problem for people to try to hook a light up for a gauge to the dimmer with the other side grounded, thinking it would work like a traditional dimmer. But with the 2G dimmer that will mess up the function of the dimmer circuit, and...
  42. brads

    2G LED HVAC Unit

    There are quite a few places you can get custom PCBs made cheap, and this project looks like a perfect place to do that. It would ensure the cutouts and LED positions are right every time, and distribute power/ground better for you. Also keep in mind the DSM dimmers act as a varying ground...
  43. brads

    Coilpack Output Voltage?

    Is Delphi producing those? I'm pretty sure there was another OEM supplier originally for the turbo one. Diamond Electric.You really have to be careful with quoted voltage specs from the oem. If they have you a spec sheet showing testing method, it may be a legit number. But more likely it...
  44. brads

    Coilpack Output Voltage?

    I find it hard to believe that a PhD candidate can't calculate all of that, or model it? What do you need real world stuff for?"Probably 50%". Pointing out the OBVIOUS BASIC error in what is freshman level electrical theory, had you immediately back down that number by a very significant...
  45. brads

    Coilpack Output Voltage?

    Did I say nothing? NO. I said "not significant". Is 14.2% ? I don't think a PhD is necessary to figure that out. But in your comment below you basically make the point for me. No, it is not signficant. Now dropping from "probably half's(sic) the available spark energy" to 14.2% is a significant...
  46. brads

    Coilpack Output Voltage?

    Find the equations for the sustaining voltage. Find the equations for the breakdown voltage. You will see that the voltages are higher on the spark under pressure. And Power is Voltage x Current. So while you are correctly understanding the basics of current flow in a loop, you are missing the...
  47. brads

    Coilpack Output Voltage?

    It's not simply just which is a better coil pack, but more importantly which is a better coil pack for your application.You have to weigh the time available to charge the coils(which is car specific), the time it takes to charge the coils, and the output specs.And people wanting to...
  48. brads

    Coilpack Output Voltage?

    That number is generally a meaningless number. If you look at the voltage rating from the manufacturer, it might be as simple as that is the max voltage the epoxy can handle, or that is the max voltage the coil will produce before shorting out(which doesn't mean you will see that voltage on the...
  49. brads

    1G ARC-2 CDI Questions

    Yes I was one of the original designers, left there a little after it was released. My car was the one in the install pics, I don't know if they ever updated that. Larry isn't there anymore either.IIRC, the 95-99 kit includes the mounting bracket for the unit, and a harness. The harness will...
  50. brads

    1G ARC-2 CDI Questions

    If you want to install it the way I designed the ignition to be installed, you leave the power transistor in place. You use the plug in harness that plugs in right at the coil pack, and make installation a breeze.I say that it works better to leave all stock stuff in the car. Other people...
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