I have a 1989 W124 230 TE.
Cigarette lighter is on the circuit that is made with ignition on. That is without the key turned in the ignition lighter does not operate.
What is the easiest way, from DIY perspective, to remedy this so that power is available to the cigarette lighter at all times.
230 TE (W124) 1989 with 153,000 miles on the clock - hoping for at least another 100K