I ran a jumper wire from the battery to the flash block. I'll take a pic of where to connect it. Be back in a bit.
Ok, heres a pic. (sorry about the quality, the lock tab is facing upward) I used a lighter and melted the insulation off the wire so I could clip a jumper wire on it with an alligator clip, then ran it to the b+ terminal. I didn't have any problems flashing after that. Some people have said that they had to turn on accessories like the lights or blower motor to avoid a voltage too high error.