Block Heater stopped working (all else fails b4 toyota)

Anyone hasn't experience driving your prius out of the driveway with the block heater plugged in beware, maybe my story will remind you to un-plug before you get into your car.

I've done it once, no twice actually more than a few times now, and to this point when i examine the plug I think I might have stretched it out by a feet or so. But when looking under the front body I notice I can push the wire back into where it came from and the wire will retract its short cord that it was setup before. A closer look at the plug reveals the ground wire cracked and one of the other reactor wire slightly bent so...


It used to work, I sometimes thought it was the ground wire so I would purposely tighten the ground wire (because the crack was splitting the wire in two) before plugging it in (dangerous!) and it would work. But now it stopped and soldering the ground wire didn't help, so I'm not sure what to do next besides cough up cash to the toyota dealer...

could i possibly rip the internal wires of the metal block? but why was it working before for a bit? Could the plug be an issue and how do I get new copper materials for it?

Here are some pics to show the damage of my plug after driving it plugged a few times






Please help! I miss plugging it in and getting 50 mpg + on cold trips.

 

uhh i think this is the wrong place to ask... but how does one splice the plug? I got the part anyone got any links for spilicing faq?

so far i've found http://www.motherearthliving.com/blog/moth...plug_585-1.html

edit splicing was a success!