Hi there and thanks for the replies...
After my message I went back to the garage. I actually did install a small manual switch on the ground connection to the battery. This was salvaged from and old heavy duty power supply, although the wires are not so big like the one that connects the ground right now, I believe they wont get hot (will check them anyway).
This is actually pretty cool because it is very handy when you want to access the front rotor cover (instead of disconnecting the battery lead you just use the switch) and other actions where is better to disconnect the power leads.
About the 'power leak', before I left the garage I tested once again, but this time only did the resistance test and got infinite.
Dont know what happened before, can I have an intermittent leak?
I wired the extra-lamp without a 12v switch, but I think (if I keep the extra-lamp) I will buy one and re-do the electrical installation. They only cost 5 dollars so there's no reason no to use one.
Anyway I have done a small test and discovered that with the headlights + extra headlight there's a 10A drain. I don't think the R65 can keep up with this kind of drain, does it?
Maybe I will just give up the extra-headlight, I wasn't planning to use it much anyway, and just liked the look of it.. :p
Regards,
Sergio
ps: bob, I will do that leak test tomorrow morning! Maybe it was it!