Date registered: Nov 2009
Vehicle: 1984 190D 2.2
Location: Silver Spring, MD
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Which car is this on? Also, there are severial different versions of the m104 engine, do you know which one you have?
If it runs fine and everything works, I wouldn't worry about replacing the rest of the wiring. If you have the money and plan on keeping the car for a while, you can do it if you want to avoid headaches in the future.
1979 Pontiac Firebird 5.7- 86,142 miles
1981 Chevrolet Corvette 5.7
1984 Mercedes 190D 2.2 Auto - 140,628 miles
1987 Chevrolet Sprint 1.0 - 139,000 miles
1989 Oldsmobile Cutlass Calais S - 123,000 miles
1989 Chrysler New Yorker - 95,000 miles
1991 Dodge Stealth R/T - 101,000 miles
1999 Dodge Durango - 178,000 miles
2003 Dodge Dakota - 203,000 miles