...so there are six cables connecting to the positive posts; three cables to each positive post on each battery and one cable that connects from the negative posts tying both batteries together. i am/was really certain i reconnected them correctly (tied the three cables together labeling rear batt positive post, front batt positive post. placed the one negative post cable tying both batts together on the side labled neg posts. is there a simple means to ensure the cables are correctly attached? Hesitate to revist...