Okay, okay, the bed alone has 13, right? and 3 or 5 more on the cab protector, that's a lot, but I think that's the DOT requirement.
The military uses the #1251 bulb, which draws 0.23 amps at 28 volts.
On my cranetruck (deuce plus HIAB), I have 14 clearance lights, some are LED's and only draw...