Originally Posted by
mattyboy
I am adding about 4 inches onto the oil pressure sender connection. the existing ford extending tube is about 4 inches long with 1/4 thread on the block side and 1/8th on the sender side. I need to wire in an oil pressure safety switch for the new electric fuel pump. In order to make the sender and the switch fit between the risers, power steering pump and the oil filter I'll need to add another 4 inch tube and a T fitting. The sender and the switch will be about 8 inches from the block . will doubling the length of the tube make a change in the pressure reading?? somewhere in the back of my mind the principles of electronics keep bugging me current resistance