voltage draw
Fleet Owner
Joined: Jul 2006
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From: Mi'kma'ki
my owners manual says fuse#1, 20a is for headlamp flash to pass and daytime running lamps (Canada only). That's from my 92 F250. Autozone.com has wiring diagrams under repair guides that might tell you more. You have to register on their site (free) to access repair guides.
mines showing ('93 book) the same info bashby shows.
fuse # 1 is 20 amps headlamp flash to pass and daytime running lamps (Canada only.)
so this would point me to start inspecting the headlight high/low beam flash switch.
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Elder User
Joined: Nov 2009
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i had the same problem.finally got fed up and hit up ebay for the owners manual and diesel supplement too.
mines showing ('93 book) the same info bashby shows.
fuse # 1 is 20 amps headlamp flash to pass and daytime running lamps (Canada only.)
so this would point me to start inspecting the headlight high/low beam flash switch.
mines showing ('93 book) the same info bashby shows.
fuse # 1 is 20 amps headlamp flash to pass and daytime running lamps (Canada only.)
so this would point me to start inspecting the headlight high/low beam flash switch.
Fleet Mechanic
Joined: Jan 2011
Posts: 1,709
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From: 8600 ft in Colo
Try this from the '94 factory EVTM manual:
From fuse A in the power distribution box is a LG/P wire to one of the connectors on the back of the radio. This is hot all the time, for the radio presets & clock.
From fuse A in the power distribution box is a LG/P wire to one of the connectors on the back of the radio. This is hot all the time, for the radio presets & clock.
Post Fiend
Joined: Nov 2005
Posts: 7,437
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From: Charles Town, W bygod Va
Good catch, I didnt see that earlier. I'd think the radio would run off of the same fuse either way, but you never know. OT: When I was looking at mine I noticed that I have a relay in the fuel pump relay spot... wonder what it does if anything.
Senior User
Joined: Aug 2010
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Ford Truck Enthusiasts Forums - Dark Horse's Album: More Truck Pictures
One of them should match your truck they are for different versions of the 93 &94 model years.
Good luck
Mark
PS if you send me an email To Kilo Alpha 5 Run Zig Zag at Gmail.COM I will send you a pdf of all of them.
Last edited by Dark Horse; Jan 24, 2012 at 07:08 PM. Reason: add PS.
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Elder User
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Well since every picture or chart i find says something different i decided to do a little test. Start the truck and pull the fuse and see what happens. The radio turned off. therefore i think that fuse goes to the radio. Instead of trying to track the factory wire through fire wall and dash i am just going to run a new wire with a 20a fuse to the radio and wire it in.
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Post Fiend
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From: Charles Town, W bygod Va
Well since every picture or chart i find says something different i decided to do a little test. Start the truck and pull the fuse and see what happens. The radio turned off. therefore i think that fuse goes to the radio. Instead of trying to track the factory wire through fire wall and dash i am just going to run a new wire with a 20a fuse to the radio and wire it in.
Logistics Pro
Joined: Sep 2007
Posts: 3,737
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From: Western Mass
If that battery has a bad cell, it will pull the other battery down trying to charge it, which will give you two dead batteries in the morning.
I need to change mine too. I replaced them about 4 years ago with Walmart cheapies, thinking they should be good enough for a couple years, then just warranty them. Now I'm pissed because I know I put the receipt somewhere for just that reason, and can't find it
Post Fiend
Joined: Nov 2005
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From: Charles Town, W bygod Va
Not to say you don't have a wiring issue, but this just blatantly shouts BAD BATTERY!! as your problem. Now, was the battery fully charged when unhooked? and what was the voltage on the other battery?
If that battery has a bad cell, it will pull the other battery down trying to charge it, which will give you two dead batteries in the morning.
I need to change mine too. I replaced them about 4 years ago with Walmart cheapies, thinking they should be good enough for a couple years, then just warranty them. Now I'm pissed because I know I put the receipt somewhere for just that reason, and can't find it
If that battery has a bad cell, it will pull the other battery down trying to charge it, which will give you two dead batteries in the morning.
I need to change mine too. I replaced them about 4 years ago with Walmart cheapies, thinking they should be good enough for a couple years, then just warranty them. Now I'm pissed because I know I put the receipt somewhere for just that reason, and can't find it
Logistics Pro
Joined: Sep 2007
Posts: 3,737
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From: Western Mass
bashby, I'm thinking about that, but its kind of a pain to pull both batteries in the parking lot, and bring them in, then find they won't warranty it, and have to put them back. Right now I can't afford to purchase new... I've already torn apart the glove box looking, and some of my desk, need to look again because I swear I put it someplace where I could find it....
Fleet Mechanic
Joined: Jan 2011
Posts: 1,709
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From: 8600 ft in Colo
The fuel pump relay spot isn't used on an IDI, and it has an IDM relay on a powerstroke.
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Elder User
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both batteries read 12.8 when I shut the truck off and unhooked them. In the morning the right battery read 10.1 and the left was still reading 12.8. I have two extra batteries so i am going to put on of those in today and then play with the radio. this radio is about 3 months old so i hope it is not that.