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Early 90's electrical wiring harness problems

Submitted by techtrader on 13 May 2008 - 5:54pm.
Just purchased a 1991 300sl, 104,000 miles. No problems to report, however, been reading about electrical wiring harness problems affecting certain model years from 1992-1996. Some report problems with the 1991 model years to 1996. does anyone know exactly what model years, and/or model cars/engines were affected? trying to figure out if I need to start a more detailed search under the hood. Can anyone offer any input?
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electrical wiring harness

1 July 2008 - 5:04pm
mbdiesel
The cars that where effected with the wiring harness probable will be impacted by manufacture date. Somewhere from 1992 uptil 1996. More importantly it is easy to identify bad wiring harness. Just examine harness and the plastic cover will be disintegrating or flaking off. My wire harness on 93 300sd is biodegradable and I replaced it with a brand new one. Not difficult- just go slow and unplug old one and plug in new one , one step at a time. If you think the harness is bad , you can cut cover and look under to see if individual wire insulation looks good or bad. If ok just tape up cut you made for inspection. Hope this helps. If it ain't broke don't fix it unless it is going to lead to a catastrophic event.