Up until now (Nov. 2011), the Iota DC/DC converters that we have sold and installed in many conversions are no longer available for use with a DC input. The new production units we just bought have a design change that cannot be corrected. They are being returned.
The company (Iota) says they will not be able to supply new units with a DC input.
We here at Pioneer are searching for an alternative, at a reasonable price. We will be doing testing on a couple of other brands. Further info will follow soon.
John Pioneer Conversions