Fuse Panel/Fuse Taps

[CBass]

I recently installed a dash cam in my Raptor and trying to find a good source for the interior fuse panel, what fuses were ACC(fuse only active when Bronco is turned on), what fuses were B+(fuse always hot) was not easy. So, I just went through the entire panel in my 2024 Raptor and tested every fuse and documented it. I created this spreadsheet with the results and what fuse locations (in my opinion) are good for ACC and B+ taps and which fuse locations I used. I tried to add as much detail as possible in case anyone else is struggling finding info as I did. Note that this is specific to my 2024 Raptor. The panel and fuses look to be the same across the Bronco line but I assume some of the fuse slots may do different things for different Broncos.

Anyone can read/comment on this google sheet. If you would like to add another Bronco to the sheet let me know and I can give you edit access. Might be nice to get a good list of Broncos on this for reference.

I am working on documenting the fuse panel under the hood and will add it to the spreadsheet when I am done.

https://docs.google.com/spreadsheets/d/11lRVuEE4xDKcC6U8-UcuawIjmWdxlwKzUIJE4PgmSBQ/edit?gid=0#gid=0

Sponsored

 

[RagnarKon]

Good stuff!!

Note that some of the circuits are not clear-cut, and power is controlled by transistors/relays in modules (usually the BCM) rather than a simple "this circuit is active when the Bronco is on" and "this circuit is battery-only". Just something to keep in mind for anyone installing mods on their Bronco. If, for example, you have something that you think is a battery-only circuit and it just randomly turns off on you, that's probably the BCM turning it off.

 

[CBass]

Good stuff!!

Note that some of the circuits are not clear-cut, and power is controlled by transistors/relays in modules (usually the BCM) rather than a simple "this circuit is active when the Bronco is on" and "this circuit is battery-only". Just something to keep in mind for anyone installing mods on their Bronco. If, for example, you have something that you think is a battery-only circuit and it just randomly turns off on you, that's probably the BCM turning it off.

That is a really great point. Do you know of a way to test that? I am happy to go back through them and make note of it on this sheet.

 

[Karl_in_Chicago]

Thank you for this effort, CBass, nice work.

 

[dgorsett]

Bookmarked. I was going to jokingly request the same under the hood, but then you volunteered, thanks. I've wondered how to reliably test for ACC only since some stuff may be hot with door open, hood open, time delay or if you just walk by (I hear clicking just strolling by). I've done my BAT taps by going straight to the battery and my one ACC tap to the rear cig lighter because I wanted the time delay.

 

[RagnarKon]

That is a really great point. Do you know of a way to test that? I am happy to go back through them and make note of it on this sheet.

No reliable way to test it as far as I know. We would need to know the conditions that cause the microcontroller to decide to cut power, and I don't think that's published anywhere.

Below are my notes of fuses that are controlled by some sort of relay or transistor. I gathered these from a combination of wiring diagrams and my own poking around in the fuse boxes, and I know for a fact it isn't 100% comprehensive or correct (which is why I never posted this list). But you are definitely welcome to cross-reverence my list with what you find.

BCM (interior fuse box)

• Fuse 2
• Fuse 21
• Fuse 30
• Fuse 36
• Fuse 37

BCMC (Engine bay fuse box)

• Fuse 2
• Fuse 4
• Fuse 6
• Fuse 7
• Fuse 8
• Fuse 9
• Fuse 13
• Fuse 14
• Fuse 16
• Fuse 18
• Fuse 21
• Fuse 22
• Fuse 23
• Fuse 24
• Fuse 25
• Fuse 26
• Fuse 32
• Fuse 33
• Fuse 39
• Fuse 50
• Fuse 51
• Fuse 54
• Fuse 55
• Fuse 58
• Fuse 60-65 (Upfitter switches)
• Fuse 66
• Fuse 69
• Fuse 71
• Fuse 100
• Fuse 101
• Fuse 120
• Fuse 125
• Fuse 139
• Fuse 156
• Fuse 158

 

[CBass]

No reliable way to test it as far as I know. We would need to know the conditions that cause the microcontroller to decide to cut power, and I don't think that's published anywhere.

Below are my notes of fuses that are controlled by some sort of relay or transistor. I gathered these from a combination of wiring diagrams and my own poking around in the fuse boxes, and I know for a fact it isn't 100% comprehensive or correct (which is why I never posted this list). But you are definitely welcome to cross-reverence my list with what you find.

BCM (interior fuse box)

• Fuse 2
• Fuse 21
• Fuse 30
• Fuse 36
• Fuse 37

BCMC (Engine bay fuse box)

• Fuse 2
• Fuse 4
• Fuse 6
• Fuse 7
• Fuse 8
• Fuse 9
• Fuse 13
• Fuse 14
• Fuse 16
• Fuse 18
• Fuse 21
• Fuse 22
• Fuse 23
• Fuse 24
• Fuse 25
• Fuse 26
• Fuse 32
• Fuse 33
• Fuse 39
• Fuse 50
• Fuse 51
• Fuse 54
• Fuse 55
• Fuse 58
• Fuse 60-65 (Upfitter switches)
• Fuse 66
• Fuse 69
• Fuse 71
• Fuse 100
• Fuse 101
• Fuse 120
• Fuse 125
• Fuse 139
• Fuse 156
• Fuse 158

@RagnarKon

Hey when you get a moment, could you have a look at my fuse list and let me know if your Broncos fuse panel is the same as mine or is it using slots that I may not be? I wish I would have done this with my Outer Banks so I had a bit of reference in the differences. One of my former coworkers at Google is an electrical engineer and is going to come over to try and track some of this stuff down. Appreciate your help!

 

[madfella]

I recently installed a dash cam in my Raptor and trying to find a good source for the interior fuse panel, what fuses were ACC(fuse only active when Bronco is turned on), what fuses were B+(fuse always hot) was not easy. So, I just went through the entire panel in my 2024 Raptor and tested every fuse and documented it. I created this spreadsheet with the results and what fuse locations (in my opinion) are good for ACC and B+ taps and which fuse locations I used. I tried to add as much detail as possible in case anyone else is struggling finding info as I did. Note that this is specific to my 2024 Raptor. The panel and fuses look to be the same across the Bronco line but I assume some of the fuse slots may do different things for different Broncos.

Anyone can read/comment on this google sheet. If you would like to add another Bronco to the sheet let me know and I can give you edit access. Might be nice to get a good list of Broncos on this for reference.

I am working on documenting the fuse panel under the hood and will add it to the spreadsheet when I am done.

https://docs.google.com/spreadsheets/d/11lRVuEE4xDKcC6U8-UcuawIjmWdxlwKzUIJE4PgmSBQ/edit?gid=0#gid=0

Thanks for doing this! FYI...The link to your spreadsheet isn't working.

 

[CBass]

Thanks for doing this! FYI...The link to your spreadsheet isn't working.

That’s odd. This link work? Fuse Sheet

 

[madfella]

That’s odd. This link work? Fuse Sheet

That link works! Thanks!

 

[hollapm]

Any progress made in the engine bay fuse list and which are ACC vs always on?

 

[CBass]

Any progress made in the engine bay fuse list and which are ACC vs always on?

Yes, was just going over this with another forum member. One of my friends who knows way more about this than I do, went through each fuse under the hood and what controls and modules they were connected to. His recommendation when we finished was not tapping into anything on that panel. A majority of the major control modules for the Bronco live in that panel and he told me that I shouldn’t tap into them so I don’t risk frying a module. He said that you could do it and may never have a problem but didn’t think it was worth the risk when there are a few good spots on the fuse panel in the cab.

Of course this is only my opinion from what he showed me and told me. He’s an electrical engineer so I gotta believe he is at least 50% correct. I know that others may have differing opinions or disagree but that is what I would recommend and what I am personally going with.

Sorry I didn’t have better news!

 

[hollapm]

Yes, was just going over this with another forum member. One of my friends who knows way more about this than I do, went through each fuse under the hood and what controls and modules they were connected to. His recommendation when we finished was not tapping into anything on that panel. A majority of the major control modules for the Bronco live in that panel and he told me that I shouldn’t tap into them so I don’t risk frying a module. He said that you could do it and may never have a problem but didn’t think it was worth the risk when there are a few good spots on the fuse panel in the cab.

Of course this is only my opinion from what he showed me and told me. He’s an electrical engineer so I gotta believe he is at least 50% correct. I know that others may have differing opinions or disagree but that is what I would recommend and what I am personally going with.

Sorry I didn’t have better news!

Not what I was hoping to hear but good info nonetheless. I have some additional items I’d like to hook up, like a midland GMRS where I ran the power into the engine bay. Should I have run it into the cab? Not that I want to pull the wire back through. We’re
Some in the bay better than others?

 

[CBass]

Not what I was hoping to hear but good info nonetheless. I have some additional items I’d like to hook up, like a midland GMRS where I ran the power into the engine bay. Should I have run it into the cab? Not that I want to pull the wire back through. We’re
Some in the bay better than others?

I haven’t looked at the fuse setup for other Bronco models, so this is based on the Raptor. I think they are pretty similar though but please double check.

Slots 23 - 29 would all work for anything that needs battery always on power. They are all
Marked as “spare” and all have power running to them on the Raptor. Those are my goto for B+

ACC is where you are more limited. My goto fuse slot for ACC is slot 35, marked as “spare” but has ACC power. It’s the only Micro2 ACC spare on the Raptor. Slot 22 is a Micro3 fuse and is also marked as “spare” but it’s a different fuse and not a common fuse tap. You can order them on Amazon along with Micro3 fuses. I ordered a couple in the event I ever need to use it.

There are a few more ACC slots that fall in the same category as the panel under the hood, particularly fuses 30 and 36. They are connected to some of the important control modules and I wouldn’t tap into them.

Slot 2 is ACC. It’s debatable and if I had to find something I would probably use it but it’s a last resort. On the Raptor it’s for the power windows/AC/DC converter. Important but not like your brakes I suppose.

Again, cross reference your Bronco model to see if these are the same. If so, this is what I would recommend. Hope this helps!

 

[murrman]

Good stuff!!

Note that some of the circuits are not clear-cut, and power is controlled by transistors/relays in modules (usually the BCM) rather than a simple "this circuit is active when the Bronco is on" and "this circuit is battery-only". Just something to keep in mind for anyone installing mods on their Bronco. If, for example, you have something that you think is a battery-only circuit and it just randomly turns off on you, that's probably the BCM turning it off.

I found this thread while trying to troubleshoot the parking mode on my dash cam. I used fuse 25 for the always-on (BAT) connection, but it doesn't seem to actually be always-on. Either that, or I have a defective camera. Sometimes the parking mode doesn't record anything at all, and other times it cuts off after an hour or so. Do you have any idea whether fuse 25 is one that could be getting turned off by the BCM? Alternatively, do you know of any fuse in the dash panel that for sure is always on?

Sponsored