Originally Posted by SFX Group
You plug it in to the lighter? i didnt think they worked until the ignition was on (at least my front one seems shot in my E38), not tried the rear one yet.
What about the dual battery cars (E38 / E66)?
Been using it for the past 3 years, google Deltran and the lighter adapter...
the ignition does not need to be on.. some car vacuum and air pump use the lighter hookup too