Battery Tender Plus Lights Blinking Red And Green. As I type still red with flashing green on the Ranger. Why is my battery tender blinking red and green.

Figure Ill leave the Battery Tender on a while then test voltage again. The flashing LED might indicate a poor electrical contact. Battery Tender Plus will not switch to storage charge.
After I plug in the battery tender to the lighter socket in the rear then the wall the amber light has a flashing pattern I.
Red Light Off Green Light On. From the charger and used if necessary. Tried a different tender same result. The Battery Tender Junior 12v charger has a single light that will shine either red or green.
