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<blockquote data-quote="audioholic" data-source="post: 3588836" data-attributes="member: 549629">You are describing how to wire up a relay, not an isolator. Maybe you guys are all confusing relays and diode based isolators? ngsm13 and I just had a discussion about this last week.You *can* wire multiple batts together directly, doesn&#039;t mean its always the best way to go. For examples... if I had a weak-*** stock batt for the car up front, and a nice new expensive batt exclusively for the stereo in the back, Id prolly run an isolator. If I had 2 nice, new batts, one for under the hood and one for in the back for the stereo... and like to listen to stereo with the engine off alot, Id consider running a relay. If my batts are both approx the same age/condition, I dont listen to the stereo with the engine off much, and I dont want to spend money if I dont need to, id probably just wire the batts together directly.Way too many threads lately with people over generalizing isolators, relays, etc.. and then recommending one type or the other based on this. Not a difficult topic guys, if you are in the market for dual batts, research relays/isolators/etc.</blockquote>

[QUOTE="audioholic, post: 3588836, member: 549629"] You are describing how to wire up a relay, not an isolator. Maybe you guys are all confusing relays and diode based isolators? ngsm13 and I just had a discussion about this last week. You *can* wire multiple batts together directly, doesn't mean its always the best way to go. For examples... if I had a weak-*** stock batt for the car up front, and a nice new expensive batt exclusively for the stereo in the back, Id prolly run an isolator. If I had 2 nice, new batts, one for under the hood and one for in the back for the stereo... and like to listen to stereo with the engine off alot, Id consider running a relay. If my batts are both approx the same age/condition, I dont listen to the stereo with the engine off much, and I dont want to spend money if I dont need to, id probably just wire the batts together directly. Way too many threads lately with people over generalizing isolators, relays, etc.. and then recommending one type or the other based on this. Not a difficult topic guys, if you are in the market for dual batts, research relays/isolators/etc. [/QUOTE]

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