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Dash Light Switch Maintenance
Prevost XL Dash Switches
Manufacturer is Hella in Germany.
Series of Switch is 4570.
You can buy switch through Prevost Parts or this company stocks a few for as little as $4.00 each if you know how your switch functions. Make sure you have correct voltage bulb. I use 28VDC.
Maryann Campbell
maryanncampbell@ssterlingco.com
Euromatic
29650 Grand River Ave
Farmington Hills, MI 48336
PH: 248-473-8660
NAPA can get you bulbs:
24VDC bulb is a #E85
#E85 Miniature Bulb European Width Glass Wedge Base – 28 Volt 0.04 Amp 1.12 Watt T1-1/2 European Width Glass Wedge Base, 0.30 MSCP C-2F Filament Design. 0.80″ (20.32mm) Maximum Overall Length (M.O.L.), 0.20″(5mm) Maximum Outer Diameter (M.O.D.), 0.40″(10.16mm) Light Center Length (L.C.L.). 7,000 Average Rated Hours.
The bulbs are a PITA to replace if they have melted the main casing. So …. I came up with a way of disassembling case to fix internals in switch, lubricate, replacing lens, or replacing bulb. Could not find anything online how to do it.
Use two Exacto knives and pry very carefully as shown in picture. Separate lower case from main case. You can also clean terminals and contacts after disassembly. To reassemble just snap it back together.
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1 Reply
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Great information Ed, my Marathon uses the same switches. Thanks for the research.
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