I measured the current drawn by my fixtures. Here are the results:
one 18" long fixture draws 1.75 amps total - it has two F15T8CW fluorescent tubes in it.
one 12" long fixture draws 1.10 amps total - it has two F8T5CW fluorescent tubes it in.
The battery voltage was reading 12.5 VDC with one fixture on.
If I remember correctly mine draw slightly more than Freds at just under 3 amps and just under 2 amps. Perhaps what was offered in 2005. But I measured with my link 10 monitor.
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2006 Ford 6.0PSD EB-50/E-PH SMB 4X4 Rock Crawler Trailer