I use the Porsche battery "tender" that just plugs into the cigarette lighter on my 04 C4S. Can I use the same system on a 1972T with it's older two battery style set up? sorry if this has been covered already. Thanks Hugh

 

NO, I dont think so. Aligator clip the battery

 

my 78 is a non "constant hot " lighter . I imagine yours is the same so clip the bat directly.

 

Thanks.