cujo - I should be OK. I'm still working with the original 6V system. Thanks for the heads up though. With the weather breaking here in the northeast, I hope to be able to start working on the truck again in the next week or two. Putting in the heater is "task No. 1" for this year, so I'll keep ya posted on the progress. Besides, I'm sure I'll have more questions before all is said and done and I couldn't do this stuff without the Bolters being there for info. Thanks again..