SL/R230: 04 Sl500 electrical problems

and its cheap
done a whole bunch
https://mbworld.org/forums/sl-class-...nd-system.html
looks more like your amp is not triggered to switch on
test your fiber and amp with the oem radio first

right. I never coded out the removed devices and I have left the factory amp and head unit in and everything worked well. Now for some reason the amp will not allow light to pass through it. If I wanted to install an aftermarket head unit, would I need to rewire everything? This system is very confusing.
but all my comments are valid if you replace your radio with a aftermarket
so be careful check first if you have MOST or D2B
update:
D2B converters can now be found for 100$ here
https://www.aliexpress.com/w/wholesa...s-adapter.html
great update
Last edited by BenzNinja; Nov 2, 2021 at 12:19 PM.


The Best of Mercedes & AMG



