If you *don't* pull it and you touch the battery cable (or your wrench when
you're working on it) to ground you'll have a thousand-amp short circuit
going.  That's the only reason.

Second battery only if it's wired in parallel with the first.

Yrs,
d

On Sat, Mar 31, 2018 at 11:02 AM, ddbjorkman@verizon.net <
ddbjorkman@verizon.net> wrote:

> Hoping for a quick answer from the list.  I am getting ready to crawl
> under and replace the starter on my 87 Westy.  I have the 2 battery GW
> setup.  I have 2 questions.  Do I really need to pull the negative battery
> cable before replacing the starter, which blows away radio settings,
> clocks, and getting under the seat?  If I need to pull the neg cable, do I
> have to do it to both batteries?
>
> Dave B,
>