You mean that orange snake following me down the highway is a bad thing.

 

I would unplug the heater when you go to start it. Once started, the engine will do the heating. I would get another battery when you can afford it, as it is best practice to run them about the same age. I am guessing that they are at elast 4-5 years old, which means they are mostly used.
Glad to hear the new T-Stat did the trick!

 

Yea Purplesr2 that orange snake is a bad thing. lol and thanks Supr I will do that as soon as I can.