second battery installation

don_l 07-20-2005, 5:42 PM

I need suggestions and wiring diagram to install a second battery for the sound system in a 2001 V210

Should I use a Perko switch or isolator (diode v silenoid)? Here's where I need the wiring diagram. I read somewhere when using an isolator the red wire going to the circut breaker should be removed and conected directly to the positive post on the starter battery? also the 90 amp fuse seperating the altenator lead from the starter silenoid, should it be removed?

(uga33) · (uga33) **Join Date: Jul 2003** 07-21-2005, 5:24 AM

Don do a search. There are alot 2nd battery threads on here. They should answer alot of your questions.

(iagainsti) · (iagainsti) **Join Date: Apr 2004** 07-21-2005, 10:15 AM

Perko's are popular and work well but they are manually operated. Most diode isolators have a voltage drop to the batteries(bad). Relays work well with minimal voltage loss. The best option from what I've read seems to be the HellRoaring isolator but its spendy. I use a perko and haven't looked back

(wakeme884) · (wakeme884) **Join Date: Jul 2004** 07-21-2005, 8:43 PM

Don, try this. lot of good info http://www.bcae1.com/

avdss 07-22-2005, 10:48 AM

easiest way to wire second battery and cheap too
http://www.tmcowners.com/teamtalk/showthread.php?t=3557

(jon_a) · (jon_a) **Join Date: Feb 2003** 07-22-2005, 11:30 AM

here you go
2 battery