Tom,Honestly, no offense intended. 

This way I can always stand my ground because I find that everyone feeling a the best defensive is a good offensive.

I can appreciate the fact that my experience/knowledge doesn't shine through on some internet forum, so I don't take offense to your comments.

That would be for a licensed Electrician as @Tyler Amburgy mentioned, i would not recommend doing it as a DIY project, have a licensed electrician do it with all the proper inspections, helps to free you from liability should anything happen ( even though a lawyer will always find ways to get to you - no offense to any lawyers out there ) I am a contractor but i do not do any work on my rental properties or flips, i always hire local contractors in the area.

No offense @Ryan Redenius, but I wouldn't have posted so much info and analysis on BP.

Any tips on how I should write an email convincing them to sell, or at least preview their home without sounding offensive?   

@Dan SmithHi Dan, no offense, but grossing $1,500 is not the same as positive cash flow.

It is a criminal offense to trespass on this property"So is this a sight unseen auction?

I tried to talk with him and see if he wanted to buy my little back lot and you would not believe the ignorant and offensive things this guy said.  

Allen - Absolutely no internet argument, please don't take offense.