Ranger Mods

Hi all,
I am driving a BT-50 ( PX1 specs), no smart charge and I am wondering if anybody knows if the voltage sensing connection of the alternator regulator is accessible?

I could not make sense of the wiring diagrams and was wondering if maybe there is even some fused link for this. I had years ago in a Toyota Prado a fuse in the fuse box controlling this circuit so was hoping for something similar

Reason for my question is that I am looking for a way to increase the charging voltage by a small amount eg a diode in the voltage sensing circuit would "fool" the regulator accordingly
I found that there is some temperature compensation which drops the the charging voltage above around 33 degrees outside temperature and it would be helpful for my particular use case to to avoid that.

Alternatively it would be interesting to know where the temperature input is coming from, I would assume not from inside the alternator, but again I was unsuccessful of getting any information out of the wiring diagrams

Thanks in advance for your help

Mike

Having same issues with charging. PX1 3.2 only has 1-wire on regulator controller by Hz. I've swopped the regulator with another make but no difference.
Your question relates to ecm inputs and here I would think ambient temp sensor...I'm sure there's one behind grill. If so that could be fooled with volts since its a simple 2 wire 5v sensor?

Jakes4x4 wrote: ↑Sun Mar 24, 2024 5:26 pm Having same issues with charging. PX1 3.2 only has 1-wire on regulator controller by Hz. I've swopped the regulator with another make but no difference.
Your question relates to ecm inputs and here I would think ambient temp sensor...I'm sure there's one behind grill. If so that could be fooled with volts since its a simple 2 wire 5v sensor?

Hi Jake,
Thanks for the input but I did not find try to follow up on the tempsensor because that most probably would also influence fuel injection and other things.
And I did not find a solution any other solution yet to increase the voltage when ambient temperature is high.
I got some info about what wire going into the alternator would be the one to regulate the voltage (cant remember the color which it was of the three on the small socket at the alternator).
It did not make any difference whether it was disconnected or not and it definitely did not measure the output voltage directly.
Seemed to me that it was a low voltage signal for the ECU to adjust charging voltage but could not figure out how to influence that by simple measures.
If you have any other ideas let me know but I am at my wits end.
Cheers
Mike