I plan on running a 150 shot, so I picked up an in-line pump from Speed inc. My question has to do with wiring. Can I just splice in to the hot lead for the in-tank pump in order to operate my new in-line pump, or will the 2 pumps draw too much? If i can't wire it in-line, what works best?

 

splice into the intanks grey power wire.. use that to cut on a relay that connects a fresh wire from the accessory power post to the pump and then out of the pump to ground.