TR7V8mike Posted October 8, 2020 Report Share Posted October 8, 2020 I have an RV8 in my TR7 and I am installing Megasquirt 2. One of the jobs is to connect the stepper motor but I need to know the function of each wire. So far I have this information: Green/white. Pin 1 Red/ green. Pin 26 Orange Pin 28 Blue grey Pin 29 Does anyone know the functions covered by these pins or where I can find out? Cheers Quote Link to post Share on other sites
RogerH Posted October 9, 2020 Report Share Posted October 9, 2020 Have a read here there may be some info https://buildbotics.com/wiring-stepper-motors/#:~:text=Fortunately%2C most stepper motors can,right wires on the motor. Is it a specific Stepper motor or just something that should work? Roger Quote Link to post Share on other sites
TR7V8mike Posted October 9, 2020 Author Report Share Posted October 9, 2020 Thanks Rog. Its the OEM Lucas stepper. I had a look at your link and it said "Step 1 read the documentation for the stepper." which is what I don't have. However, it gave some tips on how to figure things out. I'll have a go. Quote Link to post Share on other sites
TriumphV8 Posted October 14, 2020 Report Share Posted October 14, 2020 Connect MS to the stim and set the stepper fully open 256 steps at 20 degree engine temp and fully closed at 90 degree engine temp with the laptop. If you like make a gauge with the steps from 0 to 256 and a water temp gauge if not already on the dash. Now you can play with the wires changing water temp at the stim an find the proper connections. It was quite easy when I did so some years ago Quote Link to post Share on other sites
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