Yes its up next to the ECU and has a fuse on the top of it.....to the right of the ECU as you look at it. It's bolted to the bulkhead with 2x 10mm nuts (I think).

Cheers

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Current Mercs
R129 1994 300-24SL
W124 320E Turbo Technics Twin Turbo 350bhp

Previous Mercs
W124 1986 Quad Cam AMG Hammer, 45,000 miles
W124 300E Turbo Technics Twin Turbo 320bhp
W124 E500