Seeking MS3x wiring advice
That seems straightforward.
Half the time I tell myself I should have just paid you to build my MS, but the other half I realize I wouldn't learn a damn thing from doing that. I'm gonna get this thing done, I'm just fumbling my way through without trying to have my hand held too much. Stay tuned for more help queries in my own threads.
Half the time I tell myself I should have just paid you to build my MS, but the other half I realize I wouldn't learn a damn thing from doing that. I'm gonna get this thing done, I'm just fumbling my way through without trying to have my hand held too much. Stay tuned for more help queries in my own threads.
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Thread Starter
Junior Member
Joined: May 2005
Posts: 150
Total Cats: -6
From: Tampa, FL
I am looking at this diagram and trying to understand the next step in connecting my MS3x to my Toyota COPs and injector harness:
The COPs harness is wired to the ignitor and has two (2) additional wires that are separate from the stock harness and is intended to allow for sequential spark (instead of the OEM wasted spark system).
The injector harness has two (2) additional wires that are separate from the stock harness and wired to injectors #2 and #4. As I understand it, these are intended to run sequential injection.
Questions:
[1] Do the extra COPs wires go to pin '1M' (marked SPARK B MS3x-33) or elsewhere?
[2] Do the injector wires go to pin '2V' (marked as INJ A 2&4 with wire Y/B) or elsewhere?
The COPs harness is wired to the ignitor and has two (2) additional wires that are separate from the stock harness and is intended to allow for sequential spark (instead of the OEM wasted spark system).
The injector harness has two (2) additional wires that are separate from the stock harness and wired to injectors #2 and #4. As I understand it, these are intended to run sequential injection.
Questions:
[1] Do the extra COPs wires go to pin '1M' (marked SPARK B MS3x-33) or elsewhere?
[2] Do the injector wires go to pin '2V' (marked as INJ A 2&4 with wire Y/B) or elsewhere?
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https://trubokitty.com/#/ms3xassembly
Go to the bottom and select diagram for 90-93. Then at the bottom there is a diagram for sequential injection. You need to make sure that INJ A goes to cylinder 1 (should already be that way), INJ B goes to cylinder 3, INJ C goes to cylinder 4 and INJ D goes o cylinder 2. Same order for IGN coils. INJ and IGN C and D are not going to be found on the diagram you showed above, because there's only 2 wires for each on the factory ECU connector. The extra wires you show need to run directly to the MS3x.
Go to the bottom and select diagram for 90-93. Then at the bottom there is a diagram for sequential injection. You need to make sure that INJ A goes to cylinder 1 (should already be that way), INJ B goes to cylinder 3, INJ C goes to cylinder 4 and INJ D goes o cylinder 2. Same order for IGN coils. INJ and IGN C and D are not going to be found on the diagram you showed above, because there's only 2 wires for each on the factory ECU connector. The extra wires you show need to run directly to the MS3x.
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Thread Starter
Junior Member
Joined: May 2005
Posts: 150
Total Cats: -6
From: Tampa, FL
Reply
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Thread Starter
Junior Member
Joined: May 2005
Posts: 150
Total Cats: -6
From: Tampa, FL
https://trubokitty.com/#/ms3xassembly
Go to the bottom and select diagram for 90-93. Then at the bottom there is a diagram for sequential injection. You need to make sure that INJ A goes to cylinder 1 (should already be that way), INJ B goes to cylinder 3, INJ C goes to cylinder 4 and INJ D goes o cylinder 2. Same order for IGN coils. INJ and IGN C and D are not going to be found on the diagram you showed above, because there's only 2 wires for each on the factory ECU connector. The extra wires you show need to run directly to the MS3x.
Go to the bottom and select diagram for 90-93. Then at the bottom there is a diagram for sequential injection. You need to make sure that INJ A goes to cylinder 1 (should already be that way), INJ B goes to cylinder 3, INJ C goes to cylinder 4 and INJ D goes o cylinder 2. Same order for IGN coils. INJ and IGN C and D are not going to be found on the diagram you showed above, because there's only 2 wires for each on the factory ECU connector. The extra wires you show need to run directly to the MS3x.
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