IMO - You won't really gain a cooling benefit from the aux fan running full bore and you may wear it out quick with it running when the compressor is on. It's meant to power on when the drier hits a certain temp, and when that temp is hit, in order to protect the system it will lower the pressure by turning on either low or high speed. Maybe keep the temp. switch OEM setup? Just a thought but they designed it this way for a reason!

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1976 Mercedes 240D (Sold)
1985 Mercedes 300D Turbo Diesel: 500,000KM
1986 Mercedes 300E (Sold)
1988 Mercedes 300E (Sold)
2002 Mercedes C240 (Sold)
2008 Mercedes C350 4matic

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