does the 06 f150 have a positive of negative ground wiring system.....thank you

 

All vehicles sold in the US for the past 30 (or more) years have negative ground. In fact, I don't know of any market that uses positive.

 

ok that is what i thought, and thats how i have my wiring hooked up but yet its not working, i checked all connections and the fuses and all seems to be good, maybe i got a faulty product, thank you very much!

 

What are you trying to hook up? and what wires are you trying to hook it up to?
-Patrick

 

1955 was Ford's last year for positive ground and 6 volt systems. Ford went to negative ground when they switched to a 12 volt system in 1956.

 

hooking up a horn, and cutting the wires to the stock horn and splicing this one in.....but my stock horn has no positive or negative symbols on it so i didnt know, and im trying to run the wires through a relay.....

 

This could be an exception, where the horn itself is always energized +, and the horn button grounds when you press it.

 

The current F-150s aren't one of them.

The horn will have a positive side and a ground on each trumped. You'll want to connect the relay trigger wire to the positive side. (IIRC, + is brown, ground is black, but it's been a while, so don't quote me on that)

-Joe

 

This does not change if the system is Pos or Neg grounded. It is a change of what is switched, or turned on and off to a device.

The Horn switch ( i.e. center of the steering wheel ) switches ground to the horn relay.

The Horn Relay coil is always energized via fuse #F26 / 20 AMP.
This same fuse is what the N.O. contacts feed to the high and lo pitch horns.

The color at the Horn is :
Yellow w/ light green stripe = +12
Black = Ground.

If you hooked the horn up this way, and cut the wires, Fuse #F26 might be blown from working on it ??

If you hooked up the aftermarket horn relay coil to the Yellow w/ light green stripe, and the black wire, this would make the horn relay close the N.O. contacts. Don't know what the relay looks like that you got with the set, but the standard numbering on the relay should be :

86 & 85 relay coil. unless there is a diode across the terminals, does not matter, if there is, the pin 86 is pos, and pin 85 is ground or reference.

30 - Input to the contacts ( i.e. the feed from the battery )
87 - Normally Open ( N.O. ) contact
87A - Normally Closed ( N.C. ) contact.

These are if you have a standard Bosch type automotive relay ( 1.25" cube with a mounting tab on it ).

If you have the horn relay hooked up correctly, go back and check the fuse.

 

[QUOTE=SSCULLY]
The Horn switch ( i.e. center of the steering wheel ) switches ground to the horn relay.....snipQUOTE]

True, but the horn itself is still negative-ground, and the overall wiring on teh truck is negative-ground.

Also, if he had the wrong wires snipped on the trigger side of the relay, the item on the powered side of the *other* relay would be on all the time, not dead. (unless he was on the fround side of the relay...)

Sounds like he needs to take 10 minutes with a test light and see what has power when just to be safe. Without know what he's hooking up where and how, it's tough to provide any material help along the way.

-Joe

 

thanks everyone for the insight, ill check this out later....i hooked up a button to the second horn, and i wired it like this....let me know if this seems like a plausable way to do it, so the horn on my wheel always works, but when i press the button the other horn will work (momentary switch)

87 to positive on new horn
85 to momemtary switch
30 from battery power supply
86 to positive on old horn
then i wired the new horn neg, old horn neg, and wire comming back from the switch all to ground.....

does this seem to work....if so ill try and go check the fuse in a little while. Thank you all!


SSCULLY- everything your saying seems very insightful, but i dont think i follow...sorry, im new to the electrical part, but dont want to take it anywhere because i want to do all the work i can on my truck to get to know it. my relay is only a 4 prong and does not have the 87a, so im not sure i follow, i understand the NO contact is my original horn, and NC contact would be the new horn, but im not sure how it all wires up....sorry.

 

you have to ground the relay. the terminal across from the hot lead from the battery goes to ground. then hook the old horn pos(+) to lead 86. hook new horn pos(+) to lead across from that one. ground the new horn to the old horn ground.

 

will this allow for both horns to work, the stock with my steering wheel and the new one with a momentary switch???

 

Oh, that is a bit different, thought you were looking for the new ones to wrk off the horn on the truck.

As chiefFX4 pointed out :

85 & 86 is the coil.
85 is the ground ( fender or the fire wall, where ever you are mounting the relay ).
86 is the power from the momentary switch in the cab. Coil power is very low ( tenths of an AMP ) so you can use the power lead for the power pedals ( if installed ) cig lighter, power port ( or rear if SCrew ).

30 Fused connection from the battery post ( size the fuse to be 120% of the max load of the horns, Should be on the spec sheet / directions. )

87 is the pos terminal on the new horn.

That is it, don't mess with the factory horns. The power is not there, unless you lay on the horn button on the steering wheel ( activates the horn relay ), so that is not going to do much for you.

I included the 87A, if the relay you had was the 5 pin. Never can tell, that was more informational then any thing else.

 

thank you so very much, i am going to try this tonight, i live in florida and i am a wimp about the temp outside, its like 45 but i think i want to try it anyway, i really want to see if it will work, i may have more questions, but i will let you know, thank you again!


one thing, for 30 do i run a new wire from the battery to the relay, it seems like i am making a new connection with an inline fuse but i am kind of unclear.
and for 86 how do i pull power from something else, do i splkice into the wire, sorry just kinda new to this!!