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Old 05-05-2013, 08:26 PM   #1
Junior Member
Join Date: May 2010
Posts: 7
switch panel lights turn on but go out after awhile

I have a 1994 Newmar Kountry Star 38 foot deisel pusher.

We have it for one year and just love it.
When I turn on the dash lights everthing works fine, all instruments,
guages and switch panels work fine. The switch panel lights sporadically go out. It seems like they don't turn back on until something cools off.

I pulled the side panel on the dash and I see the wires
that go to the switch panel lights. I followed the wires to a black square
box that is 1" x 1" x 1". all the switch panels lights go into this.
The box is warm.It's sealed and potted on the back side.
It has the name Access is stamped on it
R+ ISW 5070 B/W-
Made in china

What does this black box do? Can this be my problem? On the side it is slightly disformed. It is only warm not hot. I notice when I went out 2-3 hours later the box was cold and all of the lights are lit on the switch panel.

Can you advise?

Michael and Debbie

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Old 05-06-2013, 04:44 PM   #2
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PDR John's Avatar
Join Date: May 2012
Posts: 3,645
Please be patient, your coach is all most 20 years old. Most of us haven't ever seen your model and those that have might have been some time.

If you could post some photos for reference would really be helpful. We'll see if we can track down what you need.

2013 DSDP 4347, all electric, 450 H.P. ISL
Air & hydraulic leveling
14 Jeep Grand Cherokee Overland toad
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Old 05-07-2013, 06:36 PM   #3
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Join Date: May 2010
Posts: 7
I posted pictures.

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Old 05-07-2013, 06:44 PM   #4
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Workhorse Chassis Owner
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Join Date: Oct 2004
Posts: 30,118
Welcome to the forum & irv2.
I think the box is full of resistances for different lamp intensity's.
Been on line have not found a match but maybe we can find replacement here.
Not even sure Newmar would have the parts for you but may have some idea, contact them, on what you can do.
98KSCA, 99MACA, 03 KSCA-3740- 8.1 Chev-- ALLISON Trans
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