Thanks for the compliment, Bob! I quick search says that the 2003 Fleetwood Discovery has a CAT engine, and I have a Cummins. So I can't tell you for sure what data your coach may provide. If it is like mine though, it would include the transmission, intake manifold, and coolant temps. Mine does not include oil temp however. The BlueFire app and the adapter will show you whatever is available. I just can't tell you for sure what is available. The link Bob provided includes a screenshot of my BlueFire dash, so you can see what data I chose to use. But that isn't everything that was available, just what I want to see driving down the road.
Your coach is not likely to have fuel level data available, as explained in that link. You will probably need to use a calculated fuel level from the total fuel used and the odometer readings. It should be accurate, except it will not account for fuel used by the generator, etc.
The 6-pin adapter has been discontinued. You will need to use a 6-pin to 9-pin adapter and use the 9-pin adapter.
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Jim A
'04 Alpine Coach 36' MDDS
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