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Old 02-06-2003, 11:40 AM   #1
Scooby Newbie
Member#: 20157
Join Date: Jun 2002
Location: Westerville, OH
0503 WRX STI & 03Wag
Asp White, Plat Silv Met

Default help with Autometer A/F Guage install

Help, I have a quick question. I have searched and found out where to install and how to install this gauge. I have done so and need to connect the purple wire. However I was wondering, everyone says to hook up the purple wire up to pin location to white wire B17 (on 02WRX). My question is in the diagram I was looking at, it shows the signal for the REAR o2 sensor as B17 but for the front o2 sensor it has no signal listed. Do they both send a signal to B17? And is it OK to tap into the white wire near the CPU? Or should I tap into the wire near the O2 sensor? I donít see the latter happening because I will not know the wire from the O2 sensor. I was thinking I would want the reading from the front o2 sensor since the Exhaust Gas has not yet gone through the Cats yet though?
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