Which 727 do I have?

Can anyone shed some light on my problem? I am upgrading my 65 dart gt with a 727. I have at my disposal a 1986 small block 727. My question is about this model, it has some sort of wire connection coming out of the driver side of it. Is this some sort of computer module that I will have problems with or are there any other issues on this year model. Should I get an earlier model 727 or will this one work. Any help will be greatly appreciated,Thx
Author: admin