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Old 01-01-2011, 12:08 AM   #1
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OBDII port

OBDII port
wanting to hook up a scan gauge -where is it on a 1999 gulfstream sunvoyager-with a 8.3 cummins engine i am thinking it has one because of the electronic .i am thinking it has one because of the electronic fuel pump/injection.
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Old 01-01-2011, 10:13 AM   #2
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They stuck those connectors any place they could find a spare couple of inches. It'll probably be along the bottom edge of the instrument panel/dash assembly, under the steering column. At least, that's where it's supposed to be, but it could end up almost anywhere.
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Old 01-01-2011, 12:15 PM   #3
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Most large diesel engines use a CAN bus not the OBD bus and don't have an OBD connector. There are some exceptions for pickups but not for motor homes as far as I know.
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Old 01-01-2011, 09:54 PM   #4
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what does a CAN bus look like-is it round ,an inch or so in diameter, with what looks like a bunch of pins[holes for pins] in it.
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Old 01-02-2011, 08:37 AM   #5
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Quote:
Originally Posted by frank1 View Post
what does a CAN bus look like-is it round ,an inch or so in diameter, with what looks like a bunch of pins[holes for pins] in it.
I think it is a 9 pin d-sub connector.
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Old 01-02-2011, 09:42 AM   #6
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i have had the dash panels off to change gauge light bulbs and noticed that the gauges plug into a gray colour box about 6 x 12 ''mounted on the fire wall-the the guage pigtails plug into the panel. it stewart warrner gauges. didnt notice a obd/can port-just a lot of wires everywere.-thanks
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Old 01-02-2011, 12:29 PM   #7
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Cummins DPs do not use OBDII They use a Cummins specific communication, You can see this PDF to look at the possible connectors http://www.silverleafelectronics.com...nnectors_0.pdf

SilverLeaf Electronics, Inc. | Knowledge is Horsepower also offers a free software package VMSPC to read codes and get realtime information.
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