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2025 F-150 Remote Head Options

tweiss3

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Looks good.

Not sure about the F-150, but the F-250/350/etc. have a tapped off 5 amp ignition switched feed behind the passenger side kick plate.

Might want to check here:

Did it have a empty connector, or what did it look like? The BBL was useless, it just spouted specs, but no locations of taps. I have an idea, but its a last ditch effort. I don't want to destroy anything that is sealed.
 

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Did it have a empty connector, or what did it look like? The BBL was useless, it just spouted specs, but no locations of taps. I have an idea, but its a last ditch effort. I don't want to destroy anything that is sealed.

I looked after I posted that, and didn't see what I was hoping for.
I even went back and looked at 2024 and 2023 model year.

The F-250/350/etc. have pretty detailed documents that were helpful when I've been setting them up. Used to be the F-150's did too.

The circuit was taped off in a bundle. The bundle had a tag that said what each wire was for. Not sure if the F-150's have it, but it's pretty easy to pull that panel off and take look.

If it's not there, the cigarette lighter plugs are usually on the Retained Accessory Power, and tapping off one of those just to drive the ignition sense circuit would be an option.

If yours has the upfitter switch package, you might want to look in the wiring bundle for that under the hood. That usually includes a full time +12v and an ignition switched circuit as well.
 

tweiss3

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I looked after I posted that, and didn't see what I was hoping for.
I even went back and looked at 2024 and 2023 model year.

The F-250/350/etc. have pretty detailed documents that were helpful when I've been setting them up. Used to be the F-150's did too.
Yea, I noticed they now have a ton less information. There used to be a section that listed acceptable placement of antennas by frequency and power, no longer included.
The circuit was taped off in a bundle. The bundle had a tag that said what each wire was for. Not sure if the F-150's have it, but it's pretty easy to pull that panel off and take look.
I'll look again, but I didn't see that when I was digging around. I don't think I have any wiring marked at upfitter, but I could have missed it, now that there are like 35 different computers in the truck.
If it's not there, the cigarette lighter plugs are usually on the Retained Accessory Power, and tapping off one of those just to drive the ignition sense circuit would be an option.
That was my last ditch effort. I have already verified it's accessory/ignition switched. I am waiting to see if I can find an alternative, but I bet I can't. Now that I think about it, I should have an easier (closer) location I can use, just have to verify that it is ignition switched.
 

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Good luck.

If you find something, let me know. I checked, and the Super Duty trucks still have the documentation up, not that it will help.
 

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Alright, now I'm in the troubleshooting phase. Previous installation had single ignition sense at the KCH20 head. New install now has an ignition sense bus, with connection to both decks. No change in code plug, but I did notice that the "off" voltage is 1.3v and "on" voltage is 13.3v to ignition sense. I checked, it's getting to both decks. Is this a problem that it doesn't drop to 0v?

@kd4efm @mmckenna

Did I miss something in the code plug? It now shuts off every 10 minutes after manual power up with the button. Is there something I can put online of the ignition sense bus that would zero it when off?
 

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Alright, now I'm in the troubleshooting phase. Previous installation had single ignition sense at the KCH20 head. New install now has an ignition sense bus, with connection to both decks. No change in code plug, but I did notice that the "off" voltage is 1.3v and "on" voltage is 13.3v to ignition sense. I checked, it's getting to both decks. Is this a problem that it doesn't drop to 0v?

@kd4efm @mmckenna

Did I miss something in the code plug? It now shuts off every 10 minutes after manual power up with the button. Is there something I can put online of the ignition sense bus that would zero it when off?

No idea. I'd be interested to hear more about this.
So, you are saying that the ignition sense circuit you pulled off the truck doesn't drop to 0 volts? Where are you connected?

I had an old TK-7180 that would do something similar. Radio was set up for ignition sense with the internal timer set for 30 minutes. I'd start the truck, the radio would turn on and run fine for 30 minutes, and then start giving me the pre-warning for ignition shutdown. Then the radio would shut down, but immediately power back up and run fine for hours.
I ~think~ it was a firmware issue, if I recall correctly.
 

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I had a similar situation in my past truck, except it only did it if I used the remote start, never figured out why that was the case.

Now that I have had more time to think, I need to go back and double check. I remember when I was finding the issue where water got into the VHF deck that fried the KRK15 and the BT/GPS board, and was checking voltages, that 1.5v was still running through all decks.

I need to pull the ignition sense bus fuses to verify that there is greater than 0 volts on that line, or if its a back feed from the RF decks. If the latter, I have some troubleshooting to do.

I did flash firmware to 5.13 because of a mismatch of newer coming on the HHCH, I can't remember what I had on there before. I only recalled because I had to match firmware on the decks in my other install when I swapped to the 20R control head (those decks had 5.10), I don't usually update unless there is a reason.
 
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