Wideband o2 - Direct Wire or Splice Harness

s300 and SManager software questions & answers
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jgauth4468
Posts: 5
Joined: Wed Oct 21, 2020 4:14 am

Wideband o2 - Direct Wire or Splice Harness

Post by jgauth4468 »

I'm enjoying my project car of almost 20 years (been sitting for almost 10), just wish it wasn't a Michigan car (we love our salt on the roads in the winter).

Looking for guidance. It goes without saying a wideband is going into the setup. I have available ECU wire harness crimp on pins. Should I only splice the signal from the wideband to the ECU wire, OR can I remove the wire from the ECU connector and replace with the wideband signal wire? Hence, direct wire or splice?

Also, I know that there is the never ending debate on which ECU port location to use. I'm always open to suggestions.

Thanks for any insight.
TTR
Posts: 56
Joined: Wed Mar 31, 2004 8:48 pm

Re: Wideband o2 - Direct Wire or Splice Harness

Post by TTR »

Direct wire to d10, remove r136 and r138 inside ecu.
DaX
Posts: 568
Joined: Tue Mar 18, 2003 3:48 pm

Re: Wideband o2 - Direct Wire or Splice Harness

Post by DaX »

TTR wrote: Fri Jun 18, 2021 8:26 am Direct wire to d10, remove r136 and r138 inside ecu.
This.
spAdam
Posts: 42
Joined: Sat May 03, 2014 5:34 pm

Re: Wideband o2 - Direct Wire or Splice Harness

Post by spAdam »

I'll never understand why no one seems to use D12. You don't have to give up anything to use it since it's incredibly doubtful your engine has/is retaining EGR.

Anyone care to shed some light on this?
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Spunkster
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Location: Hondata

Re: Wideband o2 - Direct Wire or Splice Harness

Post by Spunkster »

spAdam
Posts: 42
Joined: Sat May 03, 2014 5:34 pm

Re: Wideband o2 - Direct Wire or Splice Harness

Post by spAdam »

This is how I have my current P28 set up. In the past I've used D12 without the capacitor on S300 and with other OBD1 systems and didn't notice any erroneous readings... doesn't mean they weren't present though. Either way I get to keep my ELD :)
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