UPDATE
Well I installed a new set of ZD 1's and recharged the batts. The truck sits around alot and gets alot of short starts to move it around. I think I was never giving the batterys a good charge cause of all the short starts. Well with a new set of plugs and a good charge on the batterys, she starts in 5 degree weather! Granted it doesnt like it, stumbles a little for the first few seconds but she started. I also installed a tank type heater for a safety measure and let me tell you what, it works so much better than any other block heater I have ever had! Im really impressed with it. One question though, all my new plugs ohmed out at 1.3 ohms right outta the bag. I know ZD 9's ohm out at .5 ohms but is this normal for ZD 1's?