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Old 12-01-2015, 03:47 PM   #21
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I have power to b+ no power at IG. Still can't get nothing to come on dash.
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Old 12-01-2015, 03:52 PM   #22
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Very nice. Thank you brain. I now understand it better. My megasquirt is set to tachoutput should it be off with the resister in place?
it doesnt matter if it's on or off, it's not connected to your car's wiring whatsoever.
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Old 12-01-2015, 03:52 PM   #23
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IG- should be grounded.

spacing out

Last edited by aidandj; 12-01-2015 at 04:26 PM.
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Old 12-01-2015, 04:02 PM   #24
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IG- should be grounded.
if IG- is grounded the tach will never work.
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Old 12-01-2015, 10:17 PM   #25
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I'm gonna pull the cluster tomorrow and make sure I'm getting voltage to the gauge. It decided to rain 40ft down here in East Tennessee band my tops leaking. :/
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Old 12-02-2015, 09:33 AM   #26
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The IG- pin in the diagnostic connector goes directly to the dash. Do all your tests on that.


When the car is running, and multimeter in diode test mode, you can put teh black lead to GND and red lead to IG- and it should rapidly beep at you.

If its a solid tone, then the ignitor has most likely been damaged.
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Old 12-02-2015, 11:54 AM   #27
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So I'm having this problem with a 96 (3 wire coils), using a 94-95 mspnp2, re pinned to follow 94-95 wiring. Don't ask.

But we have no tach. Would the resistor trick work for this situAtion? Or is a 1.6 thing only?
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Old 12-02-2015, 12:27 PM   #28
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no, it wont work for 3 wire coils.

you should have repinned your '96 from 4L to 2I and then use the MS tachout.


Tach is the Black/White wire. Even 90-94 wires has the b/w wire and use can use tachout on it, but you have to modify the engine bay harness to connect to the dash, where it would have done that in the ignitor to the yellow/blue wire.
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Old 12-03-2015, 01:47 AM   #29
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Thanks brain I'm gonna try everything tomorrow after work. I'll report what I find!
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Old 12-03-2015, 01:54 PM   #30
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Ok brain. I checked my coil it's a 3 white coil since I'm still useing the 1.6 electronics. Is it still the same?
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Old 12-03-2015, 01:58 PM   #31
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Yes. The resistor trick still works.
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Old 12-03-2015, 03:22 PM   #32
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The ignitor is techincally what's providing the tach signal -- it's sending a pulse to the tach everytime it tells coil 1 or 2 to fire.
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Old 12-03-2015, 03:25 PM   #33
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I thought it was when it fired 3 or 4?
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Old 12-06-2015, 11:36 PM   #34
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Ok I'm getting a solid tone out of the Ig. I swapped igniters and still the same. I'm so confused.
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Old 12-07-2015, 08:02 AM   #35
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I thought it was when it fired 3 or 4?
There's only 2 coils.

Each time coil 1 or coil 2 fires, that's a signal. It fires each coil twice a cycle.
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Old 12-07-2015, 08:03 AM   #36
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Ok I'm getting a solid tone out of the Ig. I swapped igniters and still the same. I'm so confused.
even when the car is running?
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Old 12-07-2015, 08:42 AM   #37
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There's only 2 coils.

Each time coil 1 or coil 2 fires, that's a signal. It fires each coil twice a cycle.
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Old 12-07-2015, 10:46 AM   #38
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even when the car is running?
Yep it's a solid tone. Either way I try it while running. Now i just remembered when I installed the coil packs I reversed the ignition wire signals so I could use the regular spark plug wire order. Could this be a issue?
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Old 12-07-2015, 10:48 AM   #39
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If you fucked up switching the wires, yes.
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Old 12-07-2015, 11:10 AM   #40
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Well **** lol I feel stupid. I'll swap them back and try everything again.
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