I installed a stero in my 82 240d,in doing so i tried to use the original wiring,no such luck,I checked the voltage it was only about 8 v, Checked cig lighter 8 volts,Do these cars have resistor wiring?

Thanks, I need help

No Resistor Wiring,as such (Just Age and Corrosion).

You should be getting almost Battery Voltage @ the Cigar Lighter.
(BV should be at least 12.4)

You MAY "be havin" some sort of Battery/Alternator problem.
(OR Horrendous Grounding difficulties.)
[check Engine to Chassis Grounding Strap]

Will the automobile even start without a "Jump"?

Engine "Off",What's the Voltage measured at the Battery terminals?

Engine "On" and running,What's the Voltage measured at the Battery Terminals?

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'84 300SD sold
124.128