i recently bought an air/fuel ratio and an oil pressure autometer gauge...i got the air/fuel gauge hooked up and working nice...but im havin problems with the oil pressure gauge...i just can't seem to find where it hooks up to or what it hooks up too...my friend says it hooks to the oil pressure port on the back of the block..but my other friend said u have to tap into the wires..etc..etc..im confused..how do i hook up my oil pressure gauge....oh yea..i have the crx si motor...D16A6 i think it is...thanx in advance...

 

There is an oil pressure sending unit on the back of the block. It's a 1-wire unit that has a rubber boot overtop it. What you need to do is buy a socket to fit over the oil pressure sender - I think it's 15/16" - and then remove that rubber boot. The wire will pop off. You can then use the socket to remove the oil pressure sender. Now you need a brass T fitting, a short length of steel braided tubing, and a male-male fitting. You screw the male-male fitting into the block using teflon tape on both ends to prevent leaking. The outer end of the male fitting needs teflon tape also, and then has the steel braided line screwed onto it. Now, the copper T junction that you have, use a male-male fitting to attach it to the far end of the steel braided line. Now, thread both the stock low-oil-pressure light and the male end of the oil pressure sending unit into the copper T junction, and zap-strap the T-junction to the firewall (probably use a brake line, that's what I used). Now just run a wire to the gauge from the top of the oil pressure sender, and the body of the sender will already be grounded so you don't need to worry about grounding it. Et voila! You're done!