Train horn troubles - Ford Powerstroke Diesel Forum
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post #1 of 13 Old 03-04-2013, 09:46 AM Thread Starter
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Train horn troubles

Ok i got my OBA and horn all set up and it worked perfect just the way it should...come out to the truck this morning...and the truck is dead

This is the setup i ended up using


Instead of the wire connected to the distribution box i ended up using fuse #27 in cab fuse box but i didnt actually have it hooked in overnight because i ended up needing an add-a-circut before i could actually install it and i was gonna do it this morning before work so the wire was just sitting between my floormat and the carpet so it wasnt grounding out or anything.

So i guess where do you guys think the draw is coming from because it totally drained my batteries from 7pm last night until 7am. So in 12 hrs it drained my batteries completely so its obviously a big draw.

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post #2 of 13 Old 03-04-2013, 11:12 AM
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short to ground, or relay, or air solinoid? those are where I'd start... so basicly all the electrical stuff...

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post #3 of 13 Old 03-04-2013, 11:18 AM Thread Starter
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Originally Posted by dannanw View Post
short to ground, or relay, or air solinoid? those are where I'd start... so basicly all the electrical stuff...
But why would it still work fine the way i wanted it to if theres a short?

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Quote:
Originally Posted by access_max View Post
With the issues fixed a 6.0 can run circles around a 7.3.
2000 F-350 7.3L ZF6
Standard 7.3 mods
SCT tuned
8" Fabtech lift 13" total
5:13 Gears
46" Goodyear MVTs Military takeoffs
Bushwacker Cut-Out Fender Flares
Ranch Hand front and rear bumper
On-board air W/Semi horns

1995 F-350 7.3L E4OD DRW
Standard 7.3 mods
PHP Hydra W/Tony Wildman tunes
160/0 Injectors
T-500 HPOP
E-fuel Conversion
West Coast mirrors
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post #4 of 13 Old 03-04-2013, 12:53 PM
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First, was the tank empty when the batteries were dead? Could you have run the compressor for hours & hours? Because No relay or solenoid should be able to consume enough of the batteries reserves to kill them...

Maybe this is unrelated to the horns?

Also, isn't the horn sw, in the wheel, one that supplies Ground? (I wired mine differently, through a relay, at the wire going to the electric horn so I could switch between them)
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post #5 of 13 Old 03-04-2013, 12:59 PM Thread Starter
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Originally Posted by NoRalPh View Post
First, was the tank empty when the batteries were dead? Could you have run the compressor for hours & hours? Because No relay or solenoid should be able to consume enough of the batteries reserves to kill them...

Maybe this is unrelated to the horns?

Also, isn't the horn sw, in the wheel, one that supplies Ground? (I wired mine differently, through a relay, at the wire going to the electric horn so I could switch between them)
Well my luck is it would be the day my gf left her door open or something but i didnt check the tank but the power wasnt even on to the compressor because its key on power not constant.

as for the solenoid/horn switch no theres two wires that run to the stock horn and i just snipped them and ran them to the solenoid so when i hit the horn it activates the solenoid

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Quote:
Originally Posted by access_max View Post
With the issues fixed a 6.0 can run circles around a 7.3.
2000 F-350 7.3L ZF6
Standard 7.3 mods
SCT tuned
8" Fabtech lift 13" total
5:13 Gears
46" Goodyear MVTs Military takeoffs
Bushwacker Cut-Out Fender Flares
Ranch Hand front and rear bumper
On-board air W/Semi horns

1995 F-350 7.3L E4OD DRW
Standard 7.3 mods
PHP Hydra W/Tony Wildman tunes
160/0 Injectors
T-500 HPOP
E-fuel Conversion
West Coast mirrors
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post #6 of 13 Old 03-04-2013, 01:02 PM
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Train horn troubles

I'm no expert by any means, but, at the horn, are you on the ground side? I plan on doing train horns too, just want to make sure all the problems are worked out.


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post #7 of 13 Old 03-04-2013, 01:08 PM Thread Starter
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Quote:
Originally Posted by Wannabitawerm View Post
I'm no expert by any means, but, at the horn, are you on the ground side? I plan on doing train horns too, just want to make sure all the problems are worked out.


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As far as the diagram goes it works perfectly as i wanted it to but im guessing i have something shorted or something stupid im missing. But when i first got it finally together it worked just as planned and i drove around town all day no problems

Local Jackass member Pat

Battle cry of every 6.0 owner out there
Quote:
Originally Posted by access_max View Post
With the issues fixed a 6.0 can run circles around a 7.3.
2000 F-350 7.3L ZF6
Standard 7.3 mods
SCT tuned
8" Fabtech lift 13" total
5:13 Gears
46" Goodyear MVTs Military takeoffs
Bushwacker Cut-Out Fender Flares
Ranch Hand front and rear bumper
On-board air W/Semi horns

1995 F-350 7.3L E4OD DRW
Standard 7.3 mods
PHP Hydra W/Tony Wildman tunes
160/0 Injectors
T-500 HPOP
E-fuel Conversion
West Coast mirrors
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post #8 of 13 Old 03-04-2013, 01:19 PM
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Train horn troubles

Keep us posted. If you're driving, it would be fine but it does sound like there is a constant power draw. I've heard that with the horn switch, it activates by using the ground side so if your are on the positive side, it may be constant.


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post #9 of 13 Old 03-04-2013, 01:28 PM Thread Starter
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Quote:
Originally Posted by Wannabitawerm View Post
Keep us posted. If you're driving, it would be fine but it does sound like there is a constant power draw. I've heard that with the horn switch, it activates by using the ground side so if your are on the positive side, it may be constant.


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The side that activates shouldnt matter right because its still a circut that only is hot when its completed hot to ground

Local Jackass member Pat

Battle cry of every 6.0 owner out there
Quote:
Originally Posted by access_max View Post
With the issues fixed a 6.0 can run circles around a 7.3.
2000 F-350 7.3L ZF6
Standard 7.3 mods
SCT tuned
8" Fabtech lift 13" total
5:13 Gears
46" Goodyear MVTs Military takeoffs
Bushwacker Cut-Out Fender Flares
Ranch Hand front and rear bumper
On-board air W/Semi horns

1995 F-350 7.3L E4OD DRW
Standard 7.3 mods
PHP Hydra W/Tony Wildman tunes
160/0 Injectors
T-500 HPOP
E-fuel Conversion
West Coast mirrors
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post #10 of 13 Old 03-04-2013, 03:23 PM
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Again, any draw that would drain those batteries overnight, if good, would be More than any interior light, solenoid, relay, etc. can supply. As for a short, you'd melt almost any of those wires that be in a direct short. You have to remember the reserve those two, high capacity, batteries have!

It's either unrelated, you have bad batteries, or a pretty significant draw to do that...
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