Also, You can test the wires and connections by measuring voltage drop. Take your handy dandy volt meter and put the leads directly onto the posts. Note the voltage. Now move 1 lead to the cable terminal. The voltage should be the same. Now move the 2nd lead to the terminal. Voltage should be the same. Continue moving the lead down the line to the next connection.

You can also measure voltage of individual cells by putting 1 lead in the 1st cell and the 2nd in the 2nd cell. Move the 2nd lead to the 3rd cell then 4th etc. Voltage should increase evenly and be ~1/6 of total voltage.

Professor Google and Duck Duck Go have lots of info.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.