8th Generation Honda Civic Forum - View Single Post - HOW and WHERE to hook up A/F ratio Gauge?

***soxfan143*** · 08-30-2008, 01:43 PM

You have to find a hole big enough to get the connector through the firewall. You will not be able to get it through the stock O2 sensor hole. I think. I just wired my power source for my AEM UEGO into the fuse box at a switched power spot. Buss Fuse makes circuit add on kits that are fused and plug right into an empty fuse socket in the fuse box. It has one power lead wire coming off with a butt connector already on it. Then you just put the power wire on and then run the ground to a spot under the dash. I used an existing ground location by the clutch pedal. There are only 3 wires o the AEm. Power, ground and the one for datalogging. Which unless you have an extra EMS you will not use. Then just plug the O2 sensor into the extension wire and then mount your gauge. It's actually extremely easy to install. The hardest part is running the harness through the firewall. Good luck dude.

O yea. you will need a test light to test the fuse socket to find out which one is switched and which one is constant. DO NOT USE A CONSTANT POWER SOCKET. The gauge will never turn off and you will burn out your O2 sensor. Also those adapters are available at Advance or Pep Boys.

08-30-2008, 01:43 PM	#7 (permalink)
*soxfan143* VIP Member Join Date: Nov 2007 Location: Lynnfield, MA Age: 37 Posts: 9,956 Mike	You have to find a hole big enough to get the connector through the firewall. You will not be able to get it through the stock O2 sensor hole. I think. I just wired my power source for my AEM UEGO into the fuse box at a switched power spot. Buss Fuse makes circuit add on kits that are fused and plug right into an empty fuse socket in the fuse box. It has one power lead wire coming off with a butt connector already on it. Then you just put the power wire on and then run the ground to a spot under the dash. I used an existing ground location by the clutch pedal. There are only 3 wires o the AEm. Power, ground and the one for datalogging. Which unless you have an extra EMS you will not use. Then just plug the O2 sensor into the extension wire and then mount your gauge. It's actually extremely easy to install. The hardest part is running the harness through the firewall. Good luck dude. O yea. you will need a test light to test the fuse socket to find out which one is switched and which one is constant. DO NOT USE A CONSTANT POWER SOCKET. The gauge will never turn off and you will burn out your O2 sensor. Also those adapters are available at Advance or Pep Boys.