IF you're using a fuse tap, F37 from what I can see in the BCM wiring diagram is the heated steering wheel module. That will shut off immediately and not on timer. If using the fuse tap, try other spots as they may be time delayed. The positions I listed are possibilities.
Related to the stereo, these should be time delayed (DSP, Radio)
Vacant spots may or may not. If they're wired but not powering anything they would be ideal.
Not used locations may not have any wiring at all and be a dead blank spot.
F4 - DSP (5A)
F5 - DSP (20A)
F6 - Vacant (10A)
F7 - Vacant (10A)
F8 - Not used
F9 - Rear Audio Control Module
F16 - Not used
F25 - DSP (30A)
F31 - Vacant (15A)
F33 - Radio (20A)
F35 - Vacant (5A)
The power points are fused at the Battery Junction Box (BJB) that is under the hood (F6).
I have used these several times and are compatible with Ford and are clean, safe, and easy. You can directly tap a 12v outlet to expand on your accessories.
Amazon.com: RED WOLF 12 Volt Power Adapter Wiring Harness Switch Connector Plug w/Fuse for Chrysler Dodge Ram 2001-2022 Power Outlet to Add Backup Camera CB Radio Radar Detectors Portable GPS : Electronics
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