I'm running out of excuses to not just try this
The component board is secure for now, the wires will get trimmed to length later. The injector signal goes to the leftmost blue terminal block and the vss goes to the one next to it. Car battery voltage goes to the external power jack. The other terminal blocks are ground and 5v for convenience (not enough ground and 5v pins to go around). Note: for the arduino connections, I just tin the ends of the wires with solder so they fit snugly in the pin sockets when pushed in, takes a little practice.
