Didn't want to hijack the current thread on Link 2000 and regulator, so I posted this related question as a new thread. I have a Link 2000 (not the "R" version) that gets its power from the positive terminal on Battery 1. (I use a 1-2-Both switch). Is this the proper place to take the power from? when I select battery 2 is this power cord from battery 1 affecting the voltage sensing in any way from battery 2? Also, I am again getting a "Float" green light while the unit is clearly in the absorption stage, putting in approx 20 amps. Last season I had the problem of not getting into the float mode while I was in fact in the float mode. What is going on here? Is this the start of problems for the unit? Maine Sail referenced strange behavior before the units go into a fail mode??? Thanks for ideas gents. BTW, both of my banks consist of 2 6v golf carts in series. One more thing, I did notice a ton of corrosion around all terminals of both 6v batteries on the bank where the power wire from the Link 2000 attaches. Does that mean anything?