High load electrical accessory in 2025 Ranger

[Tom W8JI]

For people who have super big stereos, what are the worries with the negative lead load current sensor system? Does the accessory negative have to return via the chassis ground point? Will a load that might reach 80 amps or more on peaks mess with that system?

Thanks, Tom

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[stuartmunto]

I wouldn't be running a negative back to the battery. Just ground it out on the chassis. The body and equipment manual has plenty of info and where to find chassis ground points (under the electrical chapter - chapter 4):

https://www.ford.com.au/content/dam...ment-manuals/ranger-bemm-final-march-2025.pdf

Edit: found this on page 112:

 

[Tom W8JI]

I wouldn't be running a negative back to the battery. Just ground it out on the chassis. The body and equipment manual has plenty of info and where to find chassis ground points (under the electrical chapter - chapter 4):

https://www.ford.com.au/content/dam...ment-manuals/ranger-bemm-final-march-2025.pdf

Edit: found this on page 112:

Thanks for that link! Good on Ford for specifying to use only the chassis.

I never connect to the battery negative, myself, unless the load totally floats from ground. I've yet to own anything that is ground independent. I just didn't know what the sensor does.

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