Divide & conquer!

Go to the bottom of the fuse box where all the wires connect to the fuse box & cut and
INSERT an in-line fuse holder into each of the wires. $5-10
USE fuses rated slightly lower than the one in the box. Then when something QUITS working you will find WHAT consumer is blowing the fuse. Good luck

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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator