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Trailer brake question

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Old 06-16-2011, 08:01 PM
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C320 Coupe
Trailer brake question
My ML320 has the factory hitch, wiring and SAM. The wiring includes power for the electric brakes. Do I still need to get an electric brake controller or does the SAM module take care of the electric trailer brakes?
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Old 06-17-2011, 01:25 PM
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'07 GL320CDI, '10 CL550
Pretty sure you need a separate controller. There are for sure WIS instructions for installing one.
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Old 06-19-2011, 02:45 PM
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Originally Posted by lkchris
Pretty sure you need a separate controller. There are for sure WIS instructions for installing one.
Where do you get the WIS instructions?
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Old 06-20-2011, 03:17 PM
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'07 GL320CDI, '10 CL550
http://www.startekinfo.com
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