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Dual Battery Setups


SRN
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OMG Dude!

Your battery negative side is OK of course :tongue: What we did (Being the 4wd place under my watchful eye) was chop off the positive battery clamp. A stainless nut and bolt was used to connect it in line with a fat power cable to the Redarc isolator. The lot was then insulated with electrical tape and sits neatly under the cruise control unit. This keeps battery connections to a minimum. Conduit, heat shrink, and stealth can make any job look neat.

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Hmmm...can't tell without physically tracing where stuff goes. The two black connectors are factory but the rest is anyone's guess from this angle. I wish I had a picture prior the dual battery install for you. I have a 1994 Aussie TI which may be different anyway. There wasn't anything on my positive battery terminal except the two big connectors. I added driving lights and an alarm which are the fat and skinny red wires you can see in my pics. Everything else connected to your battery I would consider aftermarket. Easy way to find out is to trace the wiring back to its destination or disconnect all but the two factory connectors and see what stops working.

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Yea that's kind of what I was thinking - there is a keyless system and the previous owner had a huge 5000 watt amp connected to it so who knows what tomfoolery he did to the electrical system...... oh and there's a pushbutton start on the dash (!?!?) of course that requires a key to be in the on position for it to work.... Anyways great setup!

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Thanks dude. The fact that it all hangs off your battery is the main problem, but also gives you a single point to start the search. I have always used the motto "keep it simple stupid" when doing mechanical/electrical mods to any of my vehicles. I was crazy enough to strip back the unnecessary wiring out of my old race car back in the 1980s when I didn't have a wife and kids to soak up my time. I then re-wrapped back up with the original tape (tight (|) I was) and behold the floor pan was full of unnecessary wire. It simplified any further mods or repairs and saved a bit of weight. I couldn't believe all worked first time. Less is more!

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Yes I totally agree- both the ground cable and the positive cables need to be replaced and probably the battery too... 1 wire from both - & + run to the bottom of the engine near the front so I wonder if its a part of the push button start... I'll try disconnecting one to see if it stops working as I never use it! And I might upgrade the alternator while I'm at it with one from a maxima or whatever puts out more amps... cheers

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