I am not at all familiar with such devices but that sounds so practical...if not too simple a solution.
A quick internet search for me turned up a couple of videos where some had jury rigged such a hookup to apply the concept.
Do certain companies manufacture and/or market these? Max amp load ratings?
How does the cost of doing something like this (beyond buying an HD alternator) compare to the other previously suggested and explained options of dc/ac power inversion, or using low amp draw tools or buying a stand alone separate fuel powered, engine run generator. :confused3:
It sounds great to have a continuous use 120vac outlet hard wired into a truck bed or on a tractor and always ready, working off just a running vehicle engine without compromising the battery/start system.