hookin up a water pressure gauge

[jonezer]

i have a 1990 honda accord lx and i am puttin a volts and water pressure gauge in it. i know how to hook up the volts gauge but i hvae no clue at all on how to do the water one, so please help me out

[mpumas]

A water pressure guage? May I ask why? The radiator cap will bleed excess pressure off to the overflow container and at temperature, the pressure is hovering around the rated cap pressure. But if you really want one, you need a pressure sender, not a pressure switch which is what most of the temperature units are in the Honda. I guess you could T-off either temperature switch A or B under the distributor keeping the temperature switch still in the circuit. The pressure sensor is essentially a variable resistor which you could hook up in series to your guage and 12 volts.