What is SAE J1292 and how does it effect my $195 auxiliary Switch one 30 Amps- 360 watts- 30 ampacity rating?

Chart on matching proper wire to fuses ;

Chart on recommended color codes for automobiles attached;

Has anyone got the message. The fuse must be the weak ampacity in a wire circuit. Math:
Step 1. Is 30 amp Fuse switch one #60 is > that 3.7-7 ampacity yellow wire (1.5mm) in harness from battery junction box. No good can heat up etc.

Step 2. Is 16 AWG (3.7A) ampacity < 30AMP(25-30A) ampacity: no good go to step 3

Step 3: Tell you Ford dealer to document and replace that 30 amp fuse with a 15 amp fuse.

NEVER USE A WIRE TO THIN ON AN ELECTRICAL CIRCUIT! LEASON LEARNED!😁😁

Your getting close......Maybe one more post about the same exact thing will get Ford's attention.

I think you should start a list of everyone that has melted any wires or had this issue. You know just in case. 😉

3 Dog

Laura is calling her Ford contact to pursue this. In the mean time I have a service date Thursday and will request the 30 amp fuse be removed and replaced with a 15amp fuse.

Therefore, switches 1&2 will both be 15 amps on a 1.5 mm (14-16 AWG CIRCUIT). If Ford in going to manufacture 50% EV they better understand SAE pronouncments.

@Laura
Here is what Ford says about the 6 Auxiliary switches:
"How To Use The 2021 Ford Bronco Auxiliary Switches
Ford Bronco SUV: Get Hooked Up
Part of the fun of driving a Ford Bronco™vehicle is the ability to customize. If equipped, available Auxiliary Switches with Pre-Run Accessory Wires are directly connected to the fuse box and allow owners to easily hook up their lights, radios or any other electrical device they deem necessary.
What Are The Auxiliary Switches Inside Your Ford Bronco SUV?
The auxiliary switchboard on the overhead console makes aftermarket customization easier with six prewired switches connected to the power distribution box. The six switches:
Can be customized to control additional functions
Operate only when the ignition is in the On position, regardless of whether the engine is running or not
Feature indicator lights that illuminate which switch, thus which device, is in use
How To Locate The Auxiliary Switches Inside Your Ford Bronco SUV
The switches, located above your head, are labeled AUX 1 through AUX 6. When using them for an extended period of time or when you are using high-current accessories, we recommend that you leave the engine running to maintain battery charge.
How To Locate The Auxiliary Switch Wiring Inside Your Ford Bronco SUV
There are six powered circuits and five non-powered circuits. See your Owner's Manual (page 303) for details on how to locate and identify fuses.
How To Tie Into Auxiliary Switch Wiring
Copy: When we designed your Bronco SUV, we designed with off-road enthusiasts and their love of accessories in mind. That means we did all the auxiliary wiring for you.
The six switches over your head lead to a power distribution box in the engine compartment. From there, there are five circuits that run to different parts of your Bronco vehicle:
One goes to the front grille next to the headlamp
Two circuits go to the passenger compartment behind the glove box
One circuit goes above the windshield by the passenger visor
One circuit goes to the passenger-side rear quarter panel[ put 30 Amp fused on 1/5mm2]
Now all you have to do is wire your accessories using the color-coded wires, making sure that the coloring is consistent as you connect from your power distribution box to the final circuit destination.[360 watts at point E but wire need is 12ga-10ga for 30 amps here]
Did we answer your question? No [see chart below for proper wire size for 360 w 20 feet]
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