Okay so I am getting ready to put my B16A SiR II motor in my 92 Si Hatch and I needed to know how to hook up my mechanical oil pressure and water temperature gauges. On my stock D16Z6 there are 2 water temperature sending units, 1 on the inlet for the upper radiator hose and 1 on the inlet for the lower radiator hose. Problem is that when I unplugged the sensor for the upper radiator hose the check engine light came on and I got some erratic idle. I don't think I have a coupling for the lower radiator sending unit (it's like 22mm). Now I know I said I want to put these things on my B16A. I am just worried that I am going to run into the same problem with the B16 upper sensor (CE Light and erratic idle). What do I need to do. As far as the oil I was just wondering where the sending unit is for it and also how to hook it up. Thanks for any help.