Yup Novak probably wants to make cash on the diodes they sell thats why they 
don't integrate on in their unit. There is a good tip in an old issue of Car 
Action. What you do is solder the shockty diode a 1/4 of an inch or 1 
centimetre above the motor connections. So whenever you want to change motors 
you don't have to de=solder the diode.
--- GEcho 1.11+
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