Do the following just to get engine running for short period of time...using 12v battery and wont hurt your 6v components:
1. Positive battery cable directly to starter switch.
2. Negative battery cable to frame or directly to engine.
3. Wire from battery positive through 2 pole (on/off) switch to positive side of ignition coil.
4. Wire from negative side of ignition coil to distributor housing terminal.
That's it, it will run. Use the on/off switch to energize coil/distributor. Ensure points are clean and adjusted properly. 12V will not burn out coil or points if only used a short period of time (I think this is true for the coil...might want to pop in 12v coil just to be sure).
Also, might want to gravity feed the carb from gas can sitting on roof of truck...don't let it vibrate off the roof.
