Dual battery tougher than I thought
 

I planned to get my BlueSea dual battery setup installed this past Friday. Once I started looking at wires with the ohm meter, I’m not so sure it’s going to be as easy as I thought. Based on
this thread and other comments I had read, I thought I’d just be disconnecting the orange (alternator) and red/blue(hot lead for house) wires from the starter to separate the circuits. As it turned out, it looks like the red/blue wire feeds the ignition as well as the accessories.

If I hook the red/blue wire up to the + on my house battery side, everything works, but at that point I will be using the house battery to trigger the starter solenoid, correct (rather than the starting battery)?

Is there another junction somewhere near that motor/batteries that I can disconnect to split the ignition from the accessories or will I need to run an additional hot lead up to the house panel behind the radio to separate the hot feeds coming from the 2 batteies?

Any input would be great.
Thanks

Re: Dual battery tougher than I thought
 

Humpity dumpity bumpity bump. Back to the top.

Re: Dual battery tougher than I thought
 

I just got done doing a trace of several circuits behind my dash including the ignition circuit and the only way I would be able to seperate it on my 95 Talari is to run a seperate hot lead from the starter battery to the ignition circuit breaker on the panel below the dash. Remember, anything that is switched via the "accessory" lead on your ignition switch (I've got my audio head unit, trim tab control, fume detector on it) will now be fed from the starter battery circuit. These additional switched accessories, off course, have their own dedicated power leads which are seperately fused and would be isolated back on the dedicated house circuit.

Then again, maybe you don't necessarily need to isolate the ignition circuit back from the house circuit. If you inadverntly drain the house battery by leaving some accessory on or running the stereo for several hours, you have the battery switch there to combine the house and starting batteries in parallel to get you going.

My take....