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After replacing the GPR , CS, disconnecting the FBH and replacing #22 fuse The truck is running once again. Yesterday I checked the cord to the BH to see if it was bad DIY Mechanic gave me a few suggestions to check it with an ohm meter. I checked the plug carefully and saw that there was a burnt wire. I went to the local hardware store and bought some 14-3 cable. I cut and soldered the new wire to the existing cord along with a new plug and now it works great. I also red on the web where people cut the pigtail and use a 2 prong extension. That can be a dangerous situation. If you examine the part of the cord that goes into the block there is a small brass strip. This should be a ground. If you cut that pigtail and your there is a short you may be for a surprise - a truly shocking experience.
Good job, glad you got it working. I usually plug mine in when it gets 32* or below. Truck starts fine if I forget, it just run better from start and warms up a bit quicker. Check out some timers if you have not already done so. I leave for work at 6 AM so I set my timer to come on at 3 AM, 3 hours total. Tried less time and tried more time but for me 3 hours seems to be the magic number.