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Thread: Problem with ACR
08-15-2011, 10:52 AM #31
08-15-2011, 11:23 AM #32
The SI option is virtually pointless, for the following reasons:
-Many times when you start, the batteries aren't combined anyway, due to voltage on the 'house' battery vs. the start battery.
-If the batteries are combined when you start, the ACR will separate House and Start almost instantly, due to the voltage drop from the starter cranking, giving you essentially the same benefit that you'd see from the SI circuit.
-If you are running a single battery, or dual battery without the ACR, you don't have Starter Interrupt - this is how the boats come from the factory, and nobody has had any issues with it for the last 20+ years, lol.
Long story short, save yourself the headache. I'm running my ACR without the SI hooked up.
08-15-2011, 03:47 PM #33
To your second point, the ACR will NOT "separate House and Start almost instantly, due to the voltage drop from the starter cranking". The voltage in one battery has to be below 12.75 volts for 2 min. or below 12.35 volts for 10 seconds for the ACR to open (this is stated in the manual). This is exactly what the SI circuit does - it causes the ACR to open instantly when the starter is engage, if the SI wire is properly hooked up.
No comment on your third point but we hear of lots of cases where someone's stereo suddenly died. How do we know that it's not due to the sudden drop in voltage from the starter being engaged?Al
2006 Mobius LSV
08-15-2011, 06:19 PM #34
I did pull the fuse a while back, and things have worked well so far. I can't comment on the safety of the setup, or anything to that effect, but I know that so far, things are working well. I would like to re-connect that circuit, since I went to the trouble of routing the wire for the SI circuit. I just haven't had any time at all to mess with it (I'm still kind of hoping that Al will do some testing for me/us)!!!08 LSV
Go big, or go home.
08-16-2011, 12:21 AM #35
Same here - I just disconnected the SI wire and have not gotten around to running a wire to the starter yet. Probably won't get to it until after the boating season is over.Al
2006 Mobius LSV
08-16-2011, 01:01 PM #36
I also have a remote LED, and every time I start the boat, the ACR seperates (light goes off), which is what I was basing that statement on