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  • "vanstraatenbj" started this thread

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1

Wednesday, June 27th 2018, 11:18am

National Luna Intelligent Solenoid

Hi,
I want to install a charging system to my off-road trailer. The trailer already have 2x105AH batteries with conqueror charging system build in. The DC connection is done BH connector. I don't have a 2nd battery in the Fortuner. Looking at the specs is should be save to connect the intelligent solenoid that will supply the DC to the trailer. Has anyone done this before I would like to know where you installed the solenoid in the engine bay? The + and - DC cables will be 16mm taken from the engine bay to the tow-bar.

Thank you
Barend

AJ Venter

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2

Wednesday, June 27th 2018, 11:49am

Hi Barend
Why do you want to install a solenoid system, does your built in system of the trailer not do that already for you.
Yes I did install a solenoid system for my second battery and installed cables to the tow bar for my trailer with its own system.

Hope this will help
(Only my opinion)

  • "vanstraatenbj" started this thread

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3

Wednesday, June 27th 2018, 12:00pm

Hi
I'm not sure if the DC system in the trailer (conqueror system) have the same functionality to monitor the supply DC to be above 13.5V before starting the change of the 2 batteries in the trailer. The main task is to protect the main battery and the alternator. First get the voltage up and then engage the supply to the back.
Where did you install the system? On the left site just behind the main battery or on the "firewall" at the back?

AJ Venter

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4

Wednesday, June 27th 2018, 12:39pm

Hi
Okay, better to be safe than sorry. I think you should be able to install the solenoid and then you will not loose power from your main battery if the conqueror system does not work.
You should be able to install a heavy duty solenoid that is available from most Auto Electric shops (Trekker or Lorry starter Solenoid)
I did install my system at the back of my engine compartment on the firewall.
My system is working good.

Breekbeen

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5

Wednesday, June 27th 2018, 6:12pm

Why do you not just install a DC-DC charger?

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  • "vanstraatenbj" started this thread

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6

Thursday, June 28th 2018, 10:42am

They are expensive. Outdoorwarehouse have a special now on the kit, solenoid, cables, clamps, and monitor.
Thanks for the advice.

AJ Venter

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Thursday, June 28th 2018, 10:42am

Best idea Danie! I would have done the same, but the price was out of range.
If you can get a kit on special don't let it pass you.

This post has been edited 2 times, last edit by "AJ Venter" (Jun 28th 2018, 1:25pm)


Garreth G

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8

Saturday, June 30th 2018, 11:04pm

You don’t need a DC to DC charger.

Get a solid state solenoid solution like a inter volt system. They more reliable than a system with moving parts like a National Luna solenoid.

Next step. Get a diode, they are 35c from AC/DC. Find the S-alt fuse on your fuse box and pop the fuse then bridge it with the diode.

Plug the modified fuse back in with the diode and you should have 14.4 to 14.6 volts running into your aux battery.



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PJC

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Sunday, July 1st 2018, 4:18pm

Best Fortuner Hacks :D

AmadaXtreme

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Monday, July 2nd 2018, 3:31pm

Hi,
I want to install a charging system to my off-road trailer. The trailer already have 2x105AH batteries with conqueror charging system build in. The DC connection is done BH connector. I don't have a 2nd battery in the Fortuner. Looking at the specs is should be save to connect the intelligent solenoid that will supply the DC to the trailer. Has anyone done this before I would like to know where you installed the solenoid in the engine bay? The + and - DC cables will be 16mm taken from the engine bay to the tow-bar.

Thank you
Barend


I have done this... fitted the solenoid in the engine bay which supplied power to 2 x batteries, one in the vehicle and third battery in the trailer. I also used 16mm wiring from the engine bay to the trailer.
My solenoid packed up after about 4 years..... not sure if it was to high load from the batteries
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  • "vanstraatenbj" started this thread

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11

Thursday, July 5th 2018, 11:56am

Thanks I will try the diode trick. Some more info from 4x4community.
https://www.4x4community.co.za/forum/sho…ernator-sensing

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