Just wondering if anyone has this happening on their Zeds? I've found the wire that feeds the horn is also connected to the fog light feeds. I can't remember ever seeing the fogs flash when the horn is sounding though.
Hmm, that's not supposed to be like that. It's either a purposely done modification at some stage, or something is shorting between the two circuits/switches...
It's not happening ATM Ben, I just found the wiring is common that feeds the horn and the fogs, so when I put the dash back in I'll have to check it out.
No, there is only one wire that goes to the horn and it is spliced into the fog light power feed too. It's got me scratching my head for sure.
Hi Brad, As stated by Pregz, the power to the Horn and Foggies can be via the same wire, but the switching to Earth for each item will be necessary before that unit will operate(Horn Button earths out the Horn, Fog Light Switch earths out the Foggies).
I'll speak louder for you Lloyd "THERE IS ONLY ONE WIRE GOING TO THE HORN" so I'm confused how it could work when it's common with one of the fog light wires.
fogs get triggered by a positive. horn is a negative. maybe something gone wrong previously and an autoelec wired it up that way.
Can you tone down your voice Brad(I'm trying to sleep here). I was going to give you the answer, but aazn got in first.
Sorry guys, the idea that a single wire goes to two items and operates them independently just won't happen without some complicated one-wire protocol. But that doesn't happen in our cars. The steering wheel horn switch controls the earth connection to the horn relay. The horn relay switches battery positive to the horns. Both the fogs and the horn have to be switched differently. Maybe the guy that last wired them up got one of the foggies and a horn mixed up? The horn relay has to feed two horns don't forget. The more I think about it, the more that idea makes sense. Are they the same connectors?
to add to Vaders comment, the power to the horn will be through the wire from a relay most likely, its earth is most likely through its attachment to the body of the vehicle, my guess is somehow this is the same piece of material tha earths the fog lights, it is my thought that the power must be backfeeding through the foglights circuit as well to light them up.
You've hit the nail on the head there I think Dave. Ive come to the same conclusion after remembering most zeds have 2 horns and not one like mine. The loom had cut-up wires to the foglight areas and I think I've just mixed up the wires to the foglight with a secondary horn feed. My Zed never had a second horn from when I got it, so I'll be able to plug in a second one now Thanks for the replies people.
no the horn is a negative trigger.. you can test this by putting a testlight over it (non-LED) and the horn will trigger. i know this because i used to do cruise controls and they used the horn wire. BUT im not sure how fogs are wired. as depending weather OEM/AM they can be wired anyway the installer wishes weather its negative or positive. factory options does not mean it is installed by the factory, they get a fitter to install it. like reverse sensors, they are sold at dealerships as an option, but are not installed when the car is made. its installed about a day before you get it.
Unless I can get a more manly horn I'm going with 2 units as the existing one wouldn't generate any kind of response above derision, and I need a horn with attitude because there's far too many Camry drivers around my way