Yes, on B bodies with those same options, these accesories were sourced straight from amm stud on batt side (which is the same than using a junction close to the battery like the one you described ) instead the alt side like regularly should be because these are not constant power suckers, just ocassional. Leaving these on batt side, the ammeter will register the small amount of the charge load the battery lost when working althought for more time depending on alt speed, but will be safe from the load peak they suck on the operation moment. Just like the starter motor, which its operational load is not registered on amm, but the load lost after crank up getting back to the batt (charge) slowly and on lower rates than what was used to work once alt is able to do it when spinning.
I think I mentiond this on a previous reply… not extensively detailed like I did now.
Just more jiberish on a hack job.
Wiring an electric fan on a OEM charge path muscle era mopar is an exercise in select the lesser of the evils you wish to confront. There is no perfect spot to pull power in engine running and engine off modes.
Agreed, however also depending on how you wire the setup for the best. If you set it to be turned off with ign key or automatically with a temp sensor switch no matter the ign key.
On the second case the fan should turn off in a minute or so. And if the paths are upgraded you shouldn’t get any problem.
But the ammeter can be still on the line. The fan won’t suck more than the ammeter is able tiohandle, being the only device still sucking once you parked your car.
Assuming also of course, the Charging system has been checked for weak spots before any alt upgrade or accesories added. You can’t expect to get a perfect system on a non checked 40 years car when adding stuff. Call it electrical or mechanical parts, but tipically electric parts use to be underestimated, then failures appear and begin to blame everything but the real cause.
Is like when you select a camshaft going for a power upgrade and CR along with TC being or not considered, so you can fall into an “overcamed” car. The difference is a camshaft won’t get in fire your car, like an underestimated electric system for check and mantenience could be able to.
