Re: Com wire
 

I used phone wires that I cut in the center and then inverted the connections and soldered it back together. I did try take the last terminator resistor out and the 4 jags didn't care. honestly though I think it would be easier just to get a crimping set...

Re: Com wire
 

In a pinch, you can take apart a CAT5e cable with stranded inner conductors and use it to daisy-chain your CAN devices. Alternatively, as cheap as the cable is from CTRE, AndyMark, etc. I would highly recommend buying the correct cable instead of making your own.

Alternatively, you could find some green/yellow 22 or 24 AWG wire and twist your own.