Electrical question

[guidera48]

My ProTech 1220 bit the dust and quit working. Checked the internal fuse and it's O.K. So for father's day I got a new ProTech 1240I plus and two Duracell 6v. batteries. I have the following question. Since I am going to set up the two 6v batteries in series, I will assume that I can connect the 12v lead from the charger as long as the two batteries are connected in series???
Also do I need to install another ground home run to the block for this bank or can I tap into my negative lug at the starter battery??It all goes back to the block anyway??
Thanks for your help.

 

[Stu Jackson]

Yes and yes.

 

[rhythmsurfer]

Does the negative lug have more than four wires connected to it? If so you should use another ground. I am not sure about the 6 volts???

 

[Ed Schenck]

Here are the two 6v DuraCells wired. The charger ground can go to a good engine ground. The charger positive can go anywhere on that red cable run that is convenient.

 

[guidera48]

Thanks for your imput. I used an old cable to join the two batteries and test the system. All is good. I just have to order a short cable to join the batteries made of tinned wire with the correct terminals.
Thanks