So, I have this transfer pump:
And bought 2 of these 12v outlet plugs to install in the bed of my truck so I don't have to take a separate battery with me when transferring oil (don't know why I got two, just did):
Anyway, since this pump is rated for 24 volts, is there any way to actually run the pump off the truck at 24 volts and not 12v in order to pump a little faster? I'm no electrician so excuse my ignorance. Would I be able to do this by installing both of these outlets side by side (one to each battery) and making a custom plug that plugs into each of these at same time and then connect to battery? Similar to this adapter but switching the male/female ends:
Any help or better alternatives would be greatly appreciated.