With older diesel Benzes, say 1980-1995, to what extent does cruise control affect resale value? I'm trying to gauge whether it makes financial sense to rebuild cruise amps in cars I sell. With shipping, I pay James Dean $70 or so to rebuild an amp. Am I likely to get more than that when I sell the car? I like messing around with cruise systems....it amuses me....but no sense spending the money if I can't recoup it.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 158k miles
06 E320 CDI "Rutherford", Black on Tan, 177k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 144k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 72k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife