no, drive the VB921 inverted - do ti the other way and you will toast that driver.
what coil are you using? and are you sure you have 12V when cranking?
can you hook up a spark plug to the coil HT out, rest it on the rocker cover for a good earth and see if it sparking when cranking?
are you using the ballast resistor attached to the coil?
have you timed the trigger wheel correctly? from the MSnSE instructions i used:
Does MSII code need to be told to do time-based cranking, iof you are using trigger return it will have issues trying to work out timing of trigger locations when cranking.1) Set the crank at 20BTDC
3) Make sure the rotor arm points towards the correct contact in the distributor cap
4) Bolt down the distributor
5) Turn engine backwards until the pip lines up with the VR sensor
6) Measure angle BTDC (+/- 10 degrees is good enough) at the crank
7) Enter measured angle in "Trigger angle"
8) Enter "Fixed angle" to 10 degrees
9) Start the engine
10) Adjust "Trigger angle" until the timing light is at 10 degrees
11) Set "Fixed angle" to -10
12) Start tuning
(sorry answer is full of Q's, am up late and cant sleep)
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