Just upgraded my Optimate fly lead using one from a CTEK charger The Comfort Indicator fly lead has 3 LED's to show battery condition My optimate fly lead uses the Tamiya type connector You need (I used 1.) 1.CTEK 56-629 M6 Comfort Indicator Eyelet accessory for compatible CTEK battery chargers. or 2.CTEK 56-382 M8 Comfort Indicator Eyelet accessory for compatible CTEK battery chargers. There is also a dash mounted option And to get it to work with the Optimate CTEK 56-689 comfort adaptor lead for compatible CTEK battery chargers.
