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- Aug 9, 2018
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So I have started poking around with my FJ45 and have so far replaced the alternator (picture 1) in the hope it solved my battery problems. That isn't really clear yet and I think the dual battery set up is not quite right. The vehicle has two batteries - one was dead when I went to view the vehicle and so I asked the seller to replace it which he did. But as I found out on the drive home the batteries weren't charging and so the vehicle died 20km from home - hence the new alternator.
The batteries are shown below (picture 2), the black one at the top is a "starter" battery and can hold charge at 12.5V (though I haven't been brave enough to drive the vehicle around yet so don't know if the alternator is charging it properly).
The other grey one below is a "leisure" battery and was the new one that the seller replaced. It is now totally dead and won't accept a charge at all. I had thought that this second battery was used for the winch, but those cables were connected directly to the starter battery (I have now disconnected them to keep things as simple as possible). The grey battery has a bunch of yellow and red wires connected to it and it could be that they connect to a now disabled alarm system (which activates when lifting the bonnet) but I haven't been able to trace them everywhere so don't really know. This second battery seems to be routed via a round thing mounted on the inside of the wing near the staring coil, but I haven't been able to work out what it is (second picture). I disconnected both connections from it but you can hopefully see the thick black cables from positive and negative terminals connect directly to this part, which can be seen on Picture 2. It has another smaller red cable attached to it which connects to the starting coil. I have looked at the wiring diagrams in the Haynes manual but can't seem to work out what this could be - maybe as I am not entirely sure which diagram to use (it's a 1982 LC but the diagrams are for various years in the 1970's but not later).
I wonder if:
1. I can simply remove the second grey battery completely, perhaps reconnecting all the cables that were attached to it to the black starter battery?
2. What is the thing that the second battery is connected to mounted on the inside of the wing?
Many thanks for any help
The batteries are shown below (picture 2), the black one at the top is a "starter" battery and can hold charge at 12.5V (though I haven't been brave enough to drive the vehicle around yet so don't know if the alternator is charging it properly).
The other grey one below is a "leisure" battery and was the new one that the seller replaced. It is now totally dead and won't accept a charge at all. I had thought that this second battery was used for the winch, but those cables were connected directly to the starter battery (I have now disconnected them to keep things as simple as possible). The grey battery has a bunch of yellow and red wires connected to it and it could be that they connect to a now disabled alarm system (which activates when lifting the bonnet) but I haven't been able to trace them everywhere so don't really know. This second battery seems to be routed via a round thing mounted on the inside of the wing near the staring coil, but I haven't been able to work out what it is (second picture). I disconnected both connections from it but you can hopefully see the thick black cables from positive and negative terminals connect directly to this part, which can be seen on Picture 2. It has another smaller red cable attached to it which connects to the starting coil. I have looked at the wiring diagrams in the Haynes manual but can't seem to work out what this could be - maybe as I am not entirely sure which diagram to use (it's a 1982 LC but the diagrams are for various years in the 1970's but not later).
I wonder if:
1. I can simply remove the second grey battery completely, perhaps reconnecting all the cables that were attached to it to the black starter battery?
2. What is the thing that the second battery is connected to mounted on the inside of the wing?
Many thanks for any help