Out of balance

I'm having trouble getting the batteries in balance so that they can be charged.
When I fire up the charger, I get some BEQ1s lighting up yellow and in 90 seconds one goes red indicating overheating.
Some batteries are around 13 volts and some are just under 12. They should be 13.2 volts when fully charged, and they are shipped charged. I blame this on my shorting out of the nose rack that melted one of the batteries. I think that drained the other 3 in the pack and the replacement battery has a higher charge.
My plan is to charge the low ones one at a time with a 12 volt charger and drain the high one a bit by connecting it to the SLI battery and turn on the headlights.
My cheap meter isn't exact enough for me to tell what's really going on, so I ordered a Fluke on eBay.
More on this later...

While I was charging and draining the batteries I did some more wiring.
I traced out the wire to the Tach and hooked it up to the Zilla's Hairball and ran a new wire from the dash down to the hairball for the Check Engine light. The stock wiring for Check Engine goes to the ECU, which was located under the front floor board on the passenger side. Doesn't do me any good there, so a new wire was in order.

I did a little more dressing of the wires after that.

With these last two wires hooked up I could finally chop out the rest of the wiring harness. This actually was kinda fun. After chopping, I wrapped up the ends with tape so that they won't short anything out. It looks a lot cleaner and there won't be anything to rattle around when I hit a bump.