My rear Diff is howling. I tried draining and running synthetic, still loud. I'm looking for a used one. My junkie found a locking Diff for $350.00. My car doesn't have ASR or ASD. Can I use a diff that has the option and not hook up the electronics?

BTW it's for my 92' 300D

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1999 E300DT (131,800) 154,000 Black on Black SOLD

2006 CLK 500 coupe Capri Blue on Grey (zoom,zoom)
47,000mi

04 VW TDI Passat 80,000mi
(Techno)

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