I have a 1984 190E 2.3 with a posible fuel pump relay problem. my question is can I open it up? The fuel pump relay part number is 0015459405.is the number on the side a date code ? it reads 5.06.89 Thanks the Nobleone

sure thing, open it right up, I did it millions of times to fix a few things with it, but right now it'x completely fried so I had to order a new one

some things like broken solder joints you can fix, others, not that easy.

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