Voltage drop

Update if sorts
I have 14.2v at the battery. Identical pumps. One pump has 12.2 v going to it. The other for nitrous has 10.2 Both are through identical relays. Both are basically set up the same. Both switches have 12.1-12.2v going to each of them. At this point I’m going to think bad pump. Replaced everything electrical with good connections throughout. 4 days of laying on my back. In and out of car. I can only assume it’s the pump. It has a different sound to it as well. Like it’s dragging. Ordered new pump. Shall see how it goes on Tuesday