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Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Archive through June 21, 2005 » Installing A/F gauge with PCII and hipo 02 sensor which wire do I tap into? « Previous Next »

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Ryker77
Posted on Thursday, June 16, 2005 - 07:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I know that the purple wire on the ECM is the O2 line. But I'd rather not tap into factory harness. Plus I am not sure if the signal to the ECM has been altered by the PC. o2 lines go to the PCIII and then the PCIII sends a signal to the ECM via the purple line.

So do I need to get the signal before the PCIII, if so which of the four wires? White,Black, Red, Purple.

Or tap into the wire after the PCIII?
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Johnk3
Posted on Thursday, June 16, 2005 - 09:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

if you want to see the afv you should tap the o2 before the pc3 so you get a 'raw' signal. what type of gauge? i am looking at the wide band o2 sensors.
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Ryker77
Posted on Friday, June 17, 2005 - 07:09 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I used an AutoMeter gauge. And the 4 wire o2 sensor. I assume that I can tap the purple wire on the PCII harness. \b does anybody know for which is the raw lead from the o2 sensor?}

John, read this post and you might not want to spend the extra cash on a wideband-- http://www.badweatherbikers.com/buell/messages/3842/16109.html?1118430484
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