I have changed my TM from 12 to 24 volt I have a guest 2 bank charger I hooked 1 bank to each TM battery But 1 battery never shows to be charged so I replaced that battery but it still will not show to be charged I have always charged my 1 TM battery and my cranking battery with no problems I would appreciat any advise

My guess is, one of your banks is faulty - your cranking battery is charged by the outboard so you never noticed that the charger wasn't charging it.

To test that theory, swap the batteries and banks and try again. First disconnect the trolling motor leads from the batteries, to rule out any possibility of wiring faults.

jtexas I have swaped the leads and the problem switches leads and stays with the one battery I will try disconnecting the TM wires and see what that does is the jumper wire between batterys a problem?

all is good now I guess the new battery took longer to charge than I thought it would thanks jtexas

Are you charging two batteries on one bank? If so, that is your problem. One battery per bank.

no just one battery per bank issue has been resolved it was a bad battery thanks for the help