I recently purchased a 3 speed with a Borg Warner overdrive box. I have it installed in my 55 1st series 3100. I am going to wire it up like it came from the factory with a relay and kickdown swithch. I have the wiring diagram but the solonoid on the transmission doesn't have the terminal 4 or terminal 6 marked on the solonoid case. Is there any way to know which is which so I get things wired right the frist time and not burn something up?