Is it worth taking a 2008 MB C300 to the dealership to fix a electrical issue they won’t let car start .. or find a trustees shop ?

I know a general area I hooked up cables wrong blew fuel pumps and something else a relay clicks under hood and not getting fuel or power to back windows is dealership worth it?

I know a general area I hooked up cables wrong blew fuel pumps and something else a relay clicks under hood and not getting fuel or power to back windows is dealership worth it?

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