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Old 10-06-2007, 05:56 PM   #182 (permalink)
Corey
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Join Date: May 2002
Location: Auburn, Washington
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Dual battery kit installed 10-6-2007

Thanks shazaam, I am having so much fun with this rig.
Onto todays new mod:

Dual battery kits are cool, and high on many an off roaders list of modifications to do.
With it you can safely start your vehicle should you accidentally run down your main battery.
This mod also goes towards the "Expedition" type of rig I am building.
A few more mods such as the Safari snorkel and perhaps a roof top tent, and a new rear bumper will round out my rig for the look/setup I am trying to achieve here.

I had my local Cartoys do the install on this, as the Clifford battery backup alarm was in the way, and I needed them to move it to keep it under my warranty with them.
I had asked them a few weeks back if they have installed dual battery kits before, and indeed they had.

They had one of their best installers on this today.
He ran into one snag which was not his fault.
The Painless provided switch is to big to fit into the dash switch blanks.
I had forgotten that Wayne had procured a smaller three way switch to go into the switch blank in the lower console.

I suggested to the installer that he could drill a hole in my drivers side air vent panel.
He was able to do that, but had to turn the switch sideways.
There was not enough room with the shape of the switch in the back to have the handle operate in the up/down position, so it now operate back and forth, left/right.

For kicks I called up my local Toyota dealer to see how much one of these vent panels go for, and it is a shocking $149 or so.
I may in the future buy a new one, and then get a switch like Wayne's and mount the switch and LEDs down below in the lower console like he did.
But it really does not look to shabby where it is now.
I just may decide that it is not worth the $150 to move the switch.

Pictures one, two, and three show the stock battery with the new positive wire coming off it it, and the other two pictures show the new Optima battery, the Painless solenoid, and the Bluetorch Fabworks battery tray.



Picture four shows the six bolts with the heads in the fenderwell with the threads pointing up.
The two at the rear of the tire and the two in front of them about one foot are the 5/16th bolts holding the battery box down.
The two up front above the Old Man Emu coil assembly are 1/4" bolts used to hold the solenoid to the fenderwell.



Picture five shows my alarm LED moved to the new location to the left of the rear diff lock switch.
Previously the LED was up on the dash between the mirror adjusters and the for lamp switch.



Picture six shows the red and green LEDs now mounted where the alarm LED use to be.
Picture six also shows the switch in its centered position.
This manes the main battery is only used for vehicle operation.
The solenoid is not activated, and the auxiliary battery is not being charged.

Picture seven shows the switch in the green light position.
The main and auxiliary batteries are connected for charging and starting, and the green light is illuminated when the key is in the on position.
The green light will not activate when the key is in the off position.

You would use this position to start your vehicle if you drained the main battery.
For example, winching with your engine off, running your stereo to serenade your friends with the engine off, or using a fridge/freezer such as like the ARB one I have, and you drained your main battery.
If that happens, you would flip the switch from the center position (main battery only connected) to the green light or the red light position, and you would then be able to crank over your engine to start the vehicle and charge the main battery.

Picture eight shows the switch in the red light position.
The main and auxiliary batteries are connected together and the red light is illuminated at all times regardless of the ignition switch position.



This will come in so handy when I am out camping running the ARB fridge for a few days.
If I accidentally drain the main battery, I will be able to have a way to start the vehicle and then charge back up the main battery.

Here are some additional pictures I grabbed off the websites below.

The box before being modified by Wayne, and a Yellow Top battery by Optima



The Painless dual battery kit showing all of the parts laid out



Parts used:
Bluetorch Fabworks battery tray
http://bluetorchfab.com/store/produc...?products_id=1
The box has been modified by member KD7NAC_07FJ (Wayne) by welding on a plate in the rear that follows the contour of the FJ Cruisers fenderwell, and thus giving it a more secure mounting by running those bolts above the rear of the tire as seen in picture four.

Painless 250 Amp Dual Battery Current Control System
http://www.painlessperformance.com/w...rchField=40102

Bought from Jegs
http://www.jegs.com/webapp/wcs/store...10002_20324_-1

Optima Yellow Top model D34_78
http://www.optimabatteries.com/optim.../yellowtop.php
Do an Internet search to find the best price.
I got an excellent deal on mine at my local Cartoys stereo shop.
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Corey's 2007 FJ Cruiser
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