Balanceing tap with six wire"s?

[BrianG]

What I said above is an educated guess. I would use a voltmeter to verify each wire. Just be careful not to let the probes touch because "bad" stuff will happen.

If there is indeed an extra wire that either does not go anywhere, or is doubled up, you can cut it fairly close to the pack, fold it over, heatshrink it, and tuck it away somehow. Just be sure before you do this.