When I was a kid my uncle had a PA horn mounted on his car roof and a mike a bit like a CB PTT one (maybe it was one). He had great fun telling other drivers very audibly what he thought of them!
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(24-11-2020, 09:26 PM)Zion Wrote: I love the deep truck horn sound. My horn goes toot toot and it sounds pathetic. I've had my eye on a Stebel for a while. You can use the existing connections to the horn, parallel off them to drive a relay coil, then for the output contacts just run a fused supply off the main engine bay supply / battery / piggyback at 20A to one of the output contacts, and the other output contact to the Stebel then return the new horn negative to a good ground. If you want to switch out the beefy one, just run the negative from a ground inside the cab through a switch and out to the new horn negative.
That way you only pass a ground wire through the bulkhead and if it ever chafes, the horn will still work and it's super safe.
I'd have to draw that to see whats what.
I didn't realise that Stebel did so many different type!
Had a quick look for my horn late yesterday, i know it's at the front left somewhere but dammed if i can find it.
25-11-2020, 03:02 PM (This post was last modified: 25-11-2020, 03:14 PM by Zion.)
Here you go mate:
The relay (marked U) has 2 pins for the 12V DC coil and 2 or more pins which are normally open contacts (marked N/O) - those close when the coil is powered.
You can get a simple relay with a 12V DC coil and only one pair of N/O contacts rated at 20A DC switching.
I didn't edit the relay component pins to mark them N/O hence the description to make it clear. If the one you get is a changeover relay, it will have a pin marked COM and two pins marked N/O & N/C - use the COM and N/O pair.
(25-11-2020, 03:02 PM)Zion Wrote: Here you go mate:
The relay (marked U) has 2 pins for the 12V DC coil and 2 or more pins which are normally open contacts (marked N/O) - those close when the coil is powered.
You can get a simple relay with a 12V DC coil and only one pair of N/O contacts rated at 20A DC switching.
I didn't edit the relay component pins to mark them N/O hence the description to make it clear. If the one you get is a changeover relay, it will have a pin marked COM and two pins marked N/O & N/C - use the COM and N/O pair.
Cheers for that Zion, printed off for when i get the horn.