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Old Dec 13, 2018 | 08:11 PM
  #1  
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Standalone OBDII System

Is this possible?

1. An OBDII connection and pcm in a small box (toolbox, ammo box, etc)
2. Power going into the box
3. Wires coming out of the box to the various sensors as I decide to add them

In short I am looking for a simple system that doesn't control anything but solely reads sensors and has the ability for me to plug a bluetooth OBDII tool into it.
I know very little about all of this at this point. Been doing a little research but don't know enough at this point to know what I should be reading up on.

If it is possible, does it matter what truck I pull the parts out of since it will just be reading sensors?
It's an 86 460 and looks like finding an OBDII in a 460 is a long shot if not in CA. Didn't know if any v8 would do it.
 
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Old Dec 14, 2018 | 04:32 AM
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Just my opinion but I don't think this would be necessary on an '86 460 engine---simple gauges to monitor various things like oil pressure, coolant temperature and maybe alternator voltage should work just fine. Certainly not a hip and up-to-the-minute cool as Bluetooth this or that but that arrangement has worked for years upon years long long before OBD I or OBD-II came into existence. That sort of monitoring display can be made electronic so the typical interior gauges are replaced with a monitor screen showing the values of operations for which you have installed sensors.

Keep in mind PCM means "powertrain control module" so along with monitoring conditions it controls various aspects of the powertrain operation as a whole system I'd be hard pressed to know how an OBD-II computer could be integrated into an engine/transmission that was never meant to have one installed.
 
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Old Dec 14, 2018 | 07:19 AM
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You stated your goal, but not sure of the reasoning behind it. They do make aftermarket multiplexing wiring systems now, that mimic the way modern vehicles are wired. Here's a link.

https://www.hotrod.com/articles/hrdp...ng-wiring-kit/
 
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Old Dec 14, 2018 | 09:13 AM
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Originally Posted by JWA
Just my opinion but I don't think this would be necessary on an '86 460 engine---simple gauges to monitor various things like oil pressure, coolant temperature and maybe alternator voltage should work just fine. Certainly not a hip and up-to-the-minute cool as Bluetooth this or that but that arrangement has worked for years upon years long long before OBD I or OBD-II came into existence. That sort of monitoring display can be made electronic so the typical interior gauges are replaced with a monitor screen showing the values of operations for which you have installed sensors.

Keep in mind PCM means "powertrain control module" so along with monitoring conditions it controls various aspects of the powertrain operation as a whole system I'd be hard pressed to know how an OBD-II computer could be integrated into an engine/transmission that was never meant to have one installed.
Originally Posted by Franklin2
You stated your goal, but not sure of the reasoning behind it. They do make aftermarket multiplexing wiring systems now, that mimic the way modern vehicles are wired. Here's a link.

https://www.hotrod.com/articles/hrdp...ng-wiring-kit/

Oh, this is 100% not necessary and is a purely for fun/can it be done EASILY without any real [permanent] modifications to the truck. I don't want to change anything on the truck that can't easily be reversed and the design of the interior on the 80's trucks is perfect in my opinion.
This thought just came up as I happened across a thread that mentioned adding a trans temp sensor to the C6 test port. Thought that might be a nice temp to have but wanting to avoid mounting gauges under the dash (the trailer brake controller pains me as is ).

I just didn't know if a read-only system could be implemented or if it required a lot more to it. If it is as simple as I laid out above and just requires adding a few sensor 'trees' so the new and old could coexist then I thought it might be worth checking out.
 
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Old Dec 15, 2018 | 05:02 AM
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We never know what's possible or available without asking---no harm no foul at all.
 
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