I relize the pics suck but you get the point besides all I had was my camera phone.
Went on a call because the fan ran all the time.This is a old heil gas furnace that apparently the blower went out and the guy is a "electrician" and he got them a blower motor and install it.You see he didn't know his @$$ from a hole in the ground.The kicker is he tuned the gas valve off because he wired the low voltage wrong.Why he messed with the low voltage is beyond me.
The blower motor was not the right one but they did not want to replace it.I will not give any step by step on open form but think to yourself how much this cost him and how much he would have saved if a technician would have installed it.
I don't mind going behind you diy'ers it is money in the bank but this dude could have gotten hurt I mean look at all those wires.
Before the pro's ask yes I put a cover over the switch.