Bulkhead disconnect connector problem...

I say bypass, and others will argue.

But FIND THE SHORT first.

One way is to pull the battery ground and put a big heavy lamp in series, like a stop/ tail lamp, or better, a headlamp. This limits the current so nothing will "smoke"

Another way is to buy a "short finder" This is essentially a breaker you do the same as above, and it sits there and cycles on/ off. The kit has a meter which you run around close to the harnesses. Where the big current (short) is, the meter will deflect.

Several people make these, here' just one 'xample

http://www.nextag.com/Tool-Aid-SGT25100-Short-549598430/prices-html