DaveEFI wrote: ↑Sun May 03, 2020 9:09 am
If none exists, perhaps a clamp meter would give an idea. But difficult to use with the car in use.
Easy enough ( maybe a little messy though depending on access )...just route the main alternator cable somewhere accessible so you can access it and also view the meter.
Or easier still
Clamp meter for a scope which you can datalog, or a lot of cars do now have clamp current transducers for monitoring current. Get one of those and datalog it.
Cheap one here from our wonderful Chinese friends
, powered by a PP9 battery and just outputs an analogue voltage, so easy to datalog on your ecu
https://www.ebay.co.uk/itm/Hantek-CC-65 ... SwOJJauKuP
Holley are reselling some, but not sure what actual vehicle they are from. But if you search ebay, you can find all shapes and sizes from cars here too, so it is a common feature on modern stuff, and I presume most just output a 0-5v voltage, although if doing DIY you'd need a means of calibration.
https://www.holley.com/products/fuel_sy ... ts/554-171