Re doing my bonding system, took the batteries out and put them on a charger, pulled the heavy guage positive wires from the batteries to the master switch as the Yamaha is cranking slower than normal and the starter checked out ok. Cut open the plastic sheath and found green under there so pretty sure I found the culprit. The boat is 3o years old and this will be the 3rd set of wires...so 15 years on each of the previous isn't bad around salt. Anyone else get annoyed by throwing never using all of a tube of Sika because the nozzle end goes hard after its opened? I usually cut the tube open the next time and get one more use from it...I thought why not put the open tube into the chamber sealer and suck the air out and see it this prevents the rest setting up. It worked so now when I open the sealed bag I cut it just inside the sealed strip and reuse the bag again. Looks like I will actually use most of the tube now instead of buying more and wasting most each spring.