But it wouldn't work as a signal to edis would it? And besides giving an accurate rpm signal it wouldn't serve much of a propose to megasquirt.
found old ACCEL DFI kit bryant had laying around, going to use all the GM connectors off of it and some of the wiring to make my harness... this is the basic harness and there is a fuel injector harness as well... this is the fuel injectors harness they injectors are on a batch which should be ok because that's how I will probably run it initially and later on switch to sequential. In this part of the harness is the MAP sensor, IDLE, and the pigtail that goes to the TPS Here is the part that would go to the EDIS computer, the Air Temp, Water Temp Here is the one for the O2 sensor Here is another pic of it laid out
That looks allot easier then the self inflicted time consuming misery I have gotten myself into... but man I think it looks good Remember the MS3x controls the injectors by grounding the circuit. The common line on the injectors wiring you are seeing (the yellow one) is probably the hot line(or line in). You need to make sure this because some injectors dont like to run with the positive and negative switched.
Your setup is looking sweet. I like the blue. So I've decided EDIS for the ignition. Need help clarifying something, can I still run sequential fuel injection through the MS3X board along with EDIS? The wiring kit I have for the fuel injectors is a batch fire setup so that probably would work ok on this relay board I have for the MS3 but not if I do SEFI. The relay board only shows 2 ports for INJ1 and 2 ports for INJ2.
Yes you can the injectors will be wired up in the sequential pattern. Then you will set up the EDIS module like this. The only two wires you have to worry about is the SAW (SPK A) on the MS3x plug and the PiP from the EDIS module on the MS3 plug. "With MS3 and MS3X the following external wiring should be used. Note that the cam sensor is only needed for sequential fuel."
this board only provides relays for the "main power, fuel pump, and fast idle solenoid" the plug is a direct connection from the MS3 board to the relay box. They set it up so you can use a direct plug like this. http://www.diyautotune.com/catalog/megasquirt-relay-cable-p-47.html From the relay box you run your engine bay wiring. Looking at the schematic for the relay board your INJ1 ports and your INJ2 ports are for common grounds when you are not using the MS3x board. There are also some carry through ports too run your wiring. http://www.bgsoflex.com/mspower/mspower_ShemV1.2.pdf So unfortunitely you dont use this too run your injectors, you run your injectors. They run directly from your MS3x in sequential, but you are going to have to set up another relay for a switched 12v power feed for the injector wiring in.
So I'm guessing this is how I'm going to be having the setup, and I will need to put the relay box under the hood and the EDIS unit probably under the dash.
That plug is this Note: This DB15 connector is only present on V3.57 mainboards. These are suggestions only. It is required that the correct jumpers be installed inside the case for these to work. Basically its an add on plug you have to wire up on the main board to make it work though. You can wire up extra functions too it like boost or NOS. But with your MS3x board you have about every future plug you need. Usually these are functions like boost control,2 stage NOS control, E85 table switching, launch control, VVT(variable valve timing) ect ect, but these are already controlled on the MS3x board. I dont have this on my setup because I built my own board, I have a setup of service lights, in place. And yes that cable routing setup you have is right The roll of wires you have seprate run from the relay box to the markings they call out be it a ground or fuel pump whatever. Remember you dont need to wire up the injectors from the relay box because they are already coming from the MS3x plug, so you can just leave those wires out to keep it cleaner.
Sweet, thanks for clarifying that. The mav is back from the fabricator who finished the cage. Looks awesome, he had to remove the window and the glass guy basically charged me another $350 to put in a new gasket and new glass, looks great. $1,100 to get the cage completed, that's a steal in my opinion. Tomorrow gonna be at the shop all day. Gonna start putting some gauges in and then mock up all the wiring and maybe start on the fuel system. I have everything I need for the fuel system, should be super easy to get it going.
Sounds like fun. You will have to keep me updated on getting it up and running. Unfortunitely for me I have a couple of weeks to go before I am going to be able to get mine up and running
