Yep. I understand. I weighed that vs crawling under the truck and made the decision to use the bed. I have full width between wheel wells and that was the design consideration I made. I've had the tank and compressor under the bed and it was a challenge with road salt.
Any way you could explain or show how you made your connections for the horn to function. I have a 2023 F550 that I'm going to install train horns on and like you I want the trains horns to only be on with the upfitter switch.
Two up fitter switches used. 1.) Air pump. A solenoid used that ties into the pressure switch circuit for the air pump to work if signal for air is needed by the tank switch. I found that you do NOT want to run the full power for the compressor through the air tank switch. Run a dedicated power line from battery. 2.) A solenoid that is tied into up fitter and receives signal from horn. So, when up fitter is on to blast air horn...it sends a signal to the air horn relay to open air valve. I tapped into existing horn circuit in front of vehicle such that if up fitter is ON and horn button is pressed - signal to regular horn is made AND signal to open air valve to let air flow from tank. You can find some schematics online that help.
Do you happen to have the electrical circuit for switching between the factory horn and the train horn?
Nice set up - you really thought this through. We just can't afford to sacrifice any bed space, though.
Yep. I understand. I weighed that vs crawling under the truck and made the decision to use the bed. I have full width between wheel wells and that was the design consideration I made. I've had the tank and compressor under the bed and it was a challenge with road salt.
Any way you could explain or show how you made your connections for the horn to function. I have a 2023 F550 that I'm going to install train horns on and like you I want the trains horns to only be on with the upfitter switch.
Two up fitter switches used. 1.) Air pump. A solenoid used that ties into the pressure switch circuit for the air pump to work if signal for air is needed by the tank switch. I found that you do NOT want to run the full power for the compressor through the air tank switch. Run a dedicated power line from battery. 2.) A solenoid that is tied into up fitter and receives signal from horn.
So, when up fitter is on to blast air horn...it sends a signal to the air horn relay to open air valve. I tapped into existing horn circuit in front of vehicle such that if up fitter is ON and horn button is pressed - signal to regular horn is made AND signal to open air valve to let air flow from tank.
You can find some schematics online that help.
@@ModernCountryLiving Thanks! I'm going to try this weekend.