Looking for 12V on "RUN"
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Looking for 12V on "RUN"
Folks,
Can you suggest where in the engine compartment I can find +12V while the key is in the "RUN/ON" position (and hopefully not while in the "START" position)? My truck is a 2007 Ford F350 with a V-10.
I need a signal to trigger my daytime running lights module which is required here in Canada; the truck is newly imported from the USA.
The DRL module manufacturer suggested that the trigger wire be wrapped around the high voltage lead to the plug, but as far as I can see there are no high votlage leads in my truck. Rather it appears that the coils are associated with each plug and (I'd guess) only low voltages are routed to the plug/coil. As a test I wrapped the trigger wire around the wire going to the coil (?) and the coil itself, but not enough voltage was induced to trigger the DRL module. So I think I need a direct connection to someting that's 12V on 'RUN'.
Your suggestions please.
The DRL manufacturer also suggested the oil pressure switch as a possible source. Where would that be found on a V-10?
Thank you.
Dale (who's very very new to Ford V-10 [but I do have a 1980 F-250 with an in-line 6 and the cheese whiz frame
]).
Can you suggest where in the engine compartment I can find +12V while the key is in the "RUN/ON" position (and hopefully not while in the "START" position)? My truck is a 2007 Ford F350 with a V-10.
I need a signal to trigger my daytime running lights module which is required here in Canada; the truck is newly imported from the USA.
The DRL module manufacturer suggested that the trigger wire be wrapped around the high voltage lead to the plug, but as far as I can see there are no high votlage leads in my truck. Rather it appears that the coils are associated with each plug and (I'd guess) only low voltages are routed to the plug/coil. As a test I wrapped the trigger wire around the wire going to the coil (?) and the coil itself, but not enough voltage was induced to trigger the DRL module. So I think I need a direct connection to someting that's 12V on 'RUN'.
Your suggestions please.
The DRL manufacturer also suggested the oil pressure switch as a possible source. Where would that be found on a V-10?
Thank you.
Dale (who's very very new to Ford V-10 [but I do have a 1980 F-250 with an in-line 6 and the cheese whiz frame
]).
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This was a factory option on most of the late Fords. The latest diagram I have is a 2005, and they fed the DRL controls from fuse 27 in the underdash fusebox. It ran out of there on a lightblue pink, went through a relay controlled by the parking brake lever, and then went to a DRL relay. That went to another relay which then fed the headlights through a resistor.
But that's all 2005, I don't know about 2007. I was looking for some key-on power for the fuel injection system, and it's all located in the underdash fuse box also. Most late model trucks had "pass through" wires located somewhere under the dash for the owner to use for something.
But that's all 2005, I don't know about 2007. I was looking for some key-on power for the fuel injection system, and it's all located in the underdash fuse box also. Most late model trucks had "pass through" wires located somewhere under the dash for the owner to use for something.
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OK, I poked around the battery junction box and determined that fuse F1.12 Brake pressure switch (2BA650) @ 2A operated as I desired. My mechanic advised that I not connect anything to the Fuel Injector/Ignition system as he has found that even minimal loads (i.e., the trigger sense of the DRL module) can mess with the operations. As the clearance between the fuse top and the fuse cover was zero, I could not use one of those 'add a fuse' modules (which plug into an existing fuse and also give you a second fused circuit out). So my solution was to simply solder an 18ga wire to the leg of the fuse and route that wire out of the fuse box and to my DRL module. Problem solved and the truck passed the inspection. 
Dale
Dale
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