I have a 1995 Dodge Ram 1500 360 V8 5.9L and i was wondering the step by step instructions on how to replace the oil pressure switch. Can anyone help me out? Thanks.

 

the sensor is located on the back of the block, just to the passenger side of the distributor. its hard to get to. the only time i've replaced mine was when the intake was off, so it was easy. i've not changed one with intake on, but here's my best shot at it.

remove air filter and find the sensor.
disconnect electrical connector. if it the one with the red tab, push the red tab back and then squeeze. if non-red tab, find the release and squeeze while gently prying it off.
you'll need a big (and short) adjustable wrench, or a special deep socket that's about? 1-1/16
remove, replace, reconnect, crank it up and check for leaks. reinstall air filter.

it looks like this, but sits vertically.