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Old 09-25-2020, 09:42 AM   #15
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Originally Posted by FIRE UP View Post
Well Mongobird,
This is the 24th of Sept, have you found that diagnostic port yet? If not, JaminSamin provided a great photo of what you're looking for. You could, in fact, be looking right at it but, don't recognize it. I certainly understand your debilitating issue, been there, done that. Maybe grab a nephew, son, kid in the neighborhood and pay him (or her) a couple bucks and show them the rear cap cover of the diagnostic port and, then, tell them to get their little bodies down buy the left side of that steering column and very carefully, dig around all that wiring freeway system and, see if they see the same type cap. Just a suggestion.
Finally found my diagnostics port! Or rather, my RV technician did. He removed the instrument cluster from the dashboard and found the port lurking behind a bundle of wires way up there. Plugged in the Scanguage and it works! The port was extremely difficult to find.
Elbridge Price, 1998 Dutch Star Diesel Pusher
Cummins 6.8.3 mechanical injectors, Spartan Chassis
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Old 09-26-2020, 04:00 PM   #16
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I use mine and am glad to have it!
Dave T.
2004 MERDIAN 36G Freightliner & CAT C7 330
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Old 09-26-2020, 04:09 PM   #17
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The older your coach (especially any before 2003-2004) the more likely that the connector is instead a 6 pin round style - but it will still be the same basic size and location. There SHOULD be a flange around the round port which would allow it to be mounted to a panel (but likely is not) and that may help in locating it. Mine was also bundled up in the wires behind the dash, higher up by the top of the pile.

I have the 6 pin connector on my Diplomat.
03 40' Monaco Diplomat: 1020 watts solar / Victron / Magnesine 2800. TRW steering, 23 cuft Frigidaire, dishwasher, W/D, Magneshade, lots of other mods!
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Old 09-29-2020, 02:35 PM   #18
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First, I wrote two longer posts detailing my experience here, but they did not actually get posted. Please forgive the resultant delay.

First, a mixolydian tip of the hat to JaminSamin, for the picture he posted.

I immediately scoured the area, and found nothing. Then I read a couple of posts, including a thread with FIRE-UP commenting about the left foot footrest, so I pulled that. Still did not find anything. Since I could not see well in there, and since I had to move the wires and feel with one hand, it took me a while to search the entire space.

But I did find it, about 15" left of the steering wheel, and about 1.5" from the top of the space. The connector was face up, and did not have a grey cap on it. No gray cap in sight anywhere.

As several others have posted, it had enough cable to be put closer to the front in a more usable location, which is now done.

ScanGaugeD was connected to it, and it talks with things.

Then I went through the process of swapping out the bad diagnostic display. That was a pain as well, but easier for me to get to. The new display works, but has a blink periodically. Did not figure that out yet.

The new one is about as useless in ambient light as the old one, and it appears that the only problem is the backlight LEDs. So I saved the old one, and may replace those LEDs when I get bored some day.

Thanks for everyone chiming in with their ideas!
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Old 09-30-2020, 01:42 PM   #19
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So my Scanguage is now connected. But there's a problem: It turns off after a minute or two. It connects, and all functions are there but it does not stay on. So far, I can't figure out how to make it stay on. Any ideas?
Elbridge Price, 1998 Dutch Star Diesel Pusher
Cummins 6.8.3 mechanical injectors, Spartan Chassis
2016 Toyota Prius; Acme EZE Tow Dolly
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