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Megasquirt MS1 V3.0 Loom Diagram

Old May 26, 2008 | 05:54 PM
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MS1 V3.0 Loom Diagram

I need the loom diagram for a ms1 v3.0 ASAP

it is dual VR Conditioner diagram needed

Thanks
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Old May 26, 2008 | 09:00 PM
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This should do.
Attached Thumbnails MS1 V3.0 Loom Diagram-rotaryoutputsv3.jpg   MS1 V3.0 Loom Diagram-rx7_wiring.jpg  
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Old May 26, 2008 | 09:08 PM
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js8 what pin is the input on the ecu or how do i set it up the ge - goes to any earth correct ?
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Old May 26, 2008 | 09:15 PM
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also so my ign out puts will be 4,5 & 6 ?

using the IAC links from the LEDS ?

thanks guys
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Old May 26, 2008 | 09:49 PM
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i just need to know what pins what for CAS dual VR and spark out put just the pins

im making the last of my harness all inputs are the same on mosrt ms1 units ?
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Old May 27, 2008 | 06:48 AM
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Originally Posted by rx3_pp
js8 what pin is the input on the ecu or how do i set it up the ge - goes to any earth correct ?
Yes, the g- goes to any ground, just make sure the second VR circut is grounded to that same pin in one spot too. JS8 is U1 pin 11 like the pic above says.

Originally Posted by rx3_pp
also so my ign out puts will be 4,5 & 6 ?

using the IAC links from the LEDS ?

thanks guys
Yes your spark outputs will be pins 4, 5 and 6 on the DB37 connector if you follow the above diagram. These are not the IAC stepper motor outputs on the V3 board. You can use them if you want but it means you will have to keep track of which wire is which. I'd just stick to the diagram if i were you.

Originally Posted by rx3_pp
i just need to know what pins what for CAS dual VR and spark out put just the pins

im making the last of my harness all inputs are the same on mosrt ms1 units ?
This is all in the second picture above.
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Old May 27, 2008 | 03:04 PM
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okay so i had a guy do my loom and he has 2nd vr on pin 3 SPR1 and 4 SPR2 earth for and instead of pin 7 for the other cas input its on pin 2

and spark is on 25 27 29 does that sound right he said it is sweet as long as it matches the ecu which he has set up
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Old May 28, 2008 | 09:14 PM
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Originally Posted by rx3_pp
okay so i had a guy do my loom and he has 2nd vr on pin 3 SPR1 and 4 SPR2 earth for and instead of pin 7 for the other cas input its on pin 2

and spark is on 25 27 29 does that sound right he said it is sweet as long as it matches the ecu which he has set up
For the inputs and outputs, it dosn't really matter which ones it goes to as long as they aren't being used for anything else. I think it's best to use what is in the diagram for simplicity, but that's up to whoever builds the harness. As long as they keep track of what is hooked up to what they should be fine.

As a side note, i'm not sure why he would waste one of the few input/outputs on the DB37 with the ground wire to the 2nd VR. It could have gone to any ground pin.
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