im doing a fuel kill switch for my 92 prelude but i dont know witch wire to cut can someone help me out

 

First go buy a digital voltmeter for around $15 and buy the Haynes repair manual. Flip to the back and look at the wiring diagrams and try to find your fuel pump. It will tell you the wire color. Now take off your back seat or whatever you have to do to access the electrical plug on your fuel pump. Find the wire color. Leave the plug connected but stick the red probe from the voltmeter into the plug connector touching the metal pin on the wire so you can get a connection. Touch the black probe to bare metal of the chassis. Set the voltmeter to 20V DC. Now get a partner (kidnap a homeless guy or bug your girlfriend) to turn the key on w/out starting the engine. The voltmeter should jump to 12V and then back to 0. Now start the engine. The voltmeter should jump to 12v and stay there until you turn off the engine. If it doesn't, you have the wrong wire. If it does, trace the wire back to where you want to cut it and splice in your 20A DC automotive rocker switch. Connect your wires to the switch using female quick disconnects like they use for speakers. Extend the fuel pump wire using 18gauge wire and butt connectors or solder.

If anyone posts another kill switch question without searching I will rape them anally. Yes, even if they're female.

 

Or find the fuel pump relays ECU control lead, [going to "PGM-FI Main Relay"] and install the switch on that line, it is a low current ground so a .5A switch will work, sorry do not know the color of that wire on a 92 lude, it is green/black on 90-93 Integras and yellow on 96-98 Civics and green/blue on 94-98 Integras, also green/black on 91-95 Legends.

I also agree with suspendedHatch about the Haynes, [or Helms] repair manuals, if you are going to work on your car yourself, spenr $20 on the manual and another $20 for a multimeter, they will pay for themselves in no time, 94

 

fcm, give me your address so I can send you the manual for a 92-95 Civic. I find it hilarious yet perplexing that yours is missing. One of your more slippery fingered co-workers must have made off with it when you weren't looking.