Blower motor stopped working after replacing Radiator

[Bocheetus]

As the title says, the blower motor on my 1983 K5 Blazer Diesel stopped working right after I replaced the Radiator. I'm unsure how I could of, but this is discouraging me greatly.
I seem to be getting one little problem after another with this truck. And its litterally Nickle and Diming me. This truck started off as a small project, and has now grown into a large monster. I love the thing to death, and its a blast to drive. But I just want the damn thing to go awhile without any problems. I've dug myself a hole and ill never get back what Ive put in it... I just want some assistance from you all.

Why would this happen? I've checked fuses, but i don't seem to have any popped ones. My low water dummy sensor isn't hooked up anymore (Due to improper fitting sizes) I would think that wouldn't matter.
The blower motor was running GREAT before all this. Could i have sucked something up into the blower motor to foul it?

If Anyone can give me some guidance on this, I would appreciate it. I don't have much time to diagnose, between working 60+ hours a week, school and moving into a new home. I'm stressed and this adds to it, and i just don't need it, I need a truck to RELAX ME, and DE-stress me (Muddin and such)

Thank you Fellers and Madams.

 

[Fordum]

Well, assuming you did not haul off and whack the heck out of the blower motor for fun while you were changing the rad, I would guess you left off a ground somewhere.

I seem to remember there is an important one on the rad mounting frame.

 

[JPOutfitters]

try jumpering your Blower Resistor also, could just be a coincidence!

 

[lectric80]

First quick and dirty test, connect a jumper wire from the battery directly to the post on the blower motor. If it doesn't spin, check the ground wires. There is a single ground wire that goes to the front radiator support, as well as the main ground to the engine, plus a single ground wire on the blower motor housing. To isolate it, you can run a jumper wire to the blower motor from battery ground, attach to any of the mounting screws, and then run a second jumper from the battery positive. If this gets the motor working then replace the ground wire, if not then you most likely have a bad motor. It may just be coincedence that it went after the radiator.