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Old 10-11-2021, 03:48 PM   #1
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Newmar Owners Club
Freightliner Owners Club
Join Date: Oct 2020
Posts: 8
Electric ground issues?

Having some electrical gremlins in our 2002 dutch star. Freightliner was not much help, so maybe the Forum can put this right. Having intermittent problems with instrument shutdown where all electric gauges quit, then come back on, cruise control causes check engine light to illuminate dimly, and may or may not control your speed, backup camera quits and restarts, and the quickee stairs have a mind of their own. I suspect a ground issue, the schematic shows 3 joints for multiple grounds, but does not mention where to look. Found 1 ground at frame on passenger side at engine for 3 cables, one at firewall on driver's side for several wires and one on pc board above steering wheel, all are clean and tight. There must be one somewhere that is corroded? Weather going to be bad here for next several days so I might not find it fast, but all replies welcome! Thanks!
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Old 10-11-2021, 04:05 PM   #2
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Location: Powell River, B.C.
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I don't know how many changes there are in the years between our chassis being built . But I have wiring diagrams as well as schematics for my chassis , and on the diagrams are dimensions that give the length of wire from the main harness to the ground lug . So if you think those could help I can forward them to you.
Does your coach have a smart wheel ?
Cruise control switches on the steering wheel or the turn signal stalk ?

I have this pdf on gauge testing . Won't help with cruise control or any Newmar installed items .
Attached Files
File Type: pdf Freightliner gauges operation , testing.pdf (127.9 KB, 9 views)
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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Old 10-11-2021, 04:19 PM   #3
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Find a ground point on the dash and ground that, see if it works right. Or check resistance from the dash ground to any ground point you find, that will tell you if it's getting a good ground.
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Old 10-12-2021, 03:51 PM   #4
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Join Date: Oct 2020
Posts: 8
Thanks, Skip and Argosy, have installed an auxillary ground from dash to chassis, will see if problem goes away. Skip, the cruise is on the stalk, do not have a smart wheel, not sure if wire length would help, difficult to measure any wire lengths in the harnesses, thank you both!
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