True ignition
I did a search but got nothing!
I have just installed an aftermarket HU in my CLK55 and used the cig lighter to tap into the acc circuit.
The problem is that the HU loses power everytime you move the key to the start position. This is really annoying if you like to program the navi before you head off somewhere.
Any ideas if we have a true ignition wire? That is, an acc wire that maintains power during cranking?
Many thanks
Wayne



