It's a voltage sensing wire. If you hook it to the alternator post then the voltage drop along the charging cable can't be compensated for. But running a seperate wire to the battery post ensures you've got the intended voltage.
isuzu 4BD1T swap?! (9 Viewers)
- Thread starter orangefj45
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It's a voltage sensing wire. If you hook it to the alternator post then the voltage drop along the charging cable can't be compensated for. But running a seperate wire to the battery post ensures you've got the intended voltage.
You could connect the S wire directly to the output stud and it would work but it is better to bring it back to the battery. With the S (Sense) wire connected directly to the stud, any voltage drop that occurs in the wire that goes between the stud and the battery will reduce the charging voltage by the amount of the voltage drop. So, during times of high current output by the alternator like when the battery is low or you are running a lot of stuff, the alternator will put out less than what is ideal.
Edit: Dougal, you beat me to it!
The indicator wire only turns on the "Battery" indicator so can be left disconnected. The IG wire need to be connected so that it is hot when the ignition switch is in the "Run" position. I don't have a wiring diagram for a US 60 series so I can't be more specific.
Aisin Trans
Some interesting research (no Isuzu content, sorry):
Specialist manufacturer of manual transmissions, Aisin AI
Specialist manufacturer of manual transmissions, Aisin AI
Thank you for the tremendous information contained within this thred.
Some interesting research (no Isuzu content, sorry):
Specialist manufacturer of manual transmissions, Aisin AI
Specialist manufacturer of manual transmissions, Aisin AI
Thank you for the tremendous information contained within this thred.
Some interesting research (no Isuzu content, sorry):
Specialist manufacturer of manual transmissions, Aisin AI
Specialist manufacturer of manual transmissions, Aisin AI
Thank you for the tremendous information contained within this thred.
Great find.
Feel like starting a new thread and matching up the toyota designations with the Aisin model codes?
The new owner of Overview is Randy (aka Carcrafter22) on 4BTswaps.com He's made a lot of progress in different adapter configurations over the last year but that's not on the website. He's in a rough spot personally at the moment but I'll point him towards this thread.
He's the guy with the 4BD1T which was running compound turbos, a huge injector pump and silly levels of boost.
Randy is the man, you can PM him on 4BTswaps or on Expedition Portal as well. He also has the adapter out for the manuals now also, FYI.
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the Fj62 still going strong...
have been driving and running the Fj62, the isuzu 4bd1t is running great. I replaced the rear lift tail gate this summer, the old one was rusted out. while i did the lift gate, i also replaced the gas cylinders, see the liftgate mods on the forum... lift gate mod https://forum.ih8mud.com/60-series-wagons/26702-60s-hydrolic-arm-rear-hatch.html I had also recently changed the starter, but the the problem was the ignition wire from the landcruiser had poor current, so i needed to add a relay to feed the ignition signal to the starter relay. now the starter fixes, it does really good, even in our cold weather.
have been driving and running the Fj62, the isuzu 4bd1t is running great. I replaced the rear lift tail gate this summer, the old one was rusted out. while i did the lift gate, i also replaced the gas cylinders, see the liftgate mods on the forum... lift gate mod https://forum.ih8mud.com/60-series-wagons/26702-60s-hydrolic-arm-rear-hatch.html I had also recently changed the starter, but the the problem was the ignition wire from the landcruiser had poor current, so i needed to add a relay to feed the ignition signal to the starter relay. now the starter fixes, it does really good, even in our cold weather.
It's very much still an active swap. Some interesting gearbox linkage solutions on 4btswaps.com
Hi Dougal, I’ve sent you a PM
