Stebel Wiring

[bmcdonau]

Quick question about wiring the Stebel. I used a wire straight from the battery to power the relay, but I got to wondering if there wasn't a better way. Couldn't I just cut the connector off one of the four circuits on the quartet harness and replace it with bullet conectors and use that for the 12V and ground to the Stebel Relay. Aren't those circuits fused?

[hojo in sc]

You should have a wire from the battery going to #30 on the relay, no if's and's or but's about it, you want the relay to pull it's umph (power) from the battery. Then you run a wire from the OEM horn (the wire that is hot when the horn switch is ON, to the Relay. Ground the relay, and then a wire from the relay to the Stebel horn.

[Blrfl]

Dennis,

What I did with mine (Fiamms, but it doesn't matter) was power the relay coil (85 and 86 on a Bosch relay) with the pair of existing horn lines. They already have the right terminals on them and you don't have to hunt around for a ground. Then run the positive line to one of the normally-open terminals (pins 30 and 87, doesn't matter which is used for what) and the other terminal to positive on the horn.

If you're taking horn power directly from the battery, the wire must be fused on the positive side as close to the positive terminal of the battery as is reasonable.

--Mark

[bmcdonau]

Dennis,

What I did with mine (Fiamms, but it doesn't matter) was power the relay coil (85 and 86 on a Bosch relay) with the pair of existing horn lines. They already have the right terminals on them and you don't have to hunt around for a ground. Then run the positive line to one of the normally-open terminals (pins 30 and 87, doesn't matter which is used for what) and the other terminal to positive on the horn.

If you're taking horn power directly from the battery, the wire must be fused on the positive side as close to the positive terminal of the battery as is reasonable.

--Mark

Mark,

That's what I did, but I wondered why I couldn't just use one of the circuits on the quartet harness to power the horn instead of running the wire all the way back to the battery.

[Blrfl]

That's what I did, but I wondered why I couldn't just use one of the circuits on the quartet harness to power the horn instead of running the wire all the way back to the battery.

Insufficient available juice. The QH wiring isn't beefy enough to deliver the kind of current you need for the horns to work really well.

--Mark

[bmcdonau]

Insufficient available juice. The QH wiring isn't beefy enough to deliver the kind of current you need for the horns to work really well.

--Mark

Okay, thanks.

[st13fundred]

And don't use anything smaller than #14 wire (anything larger than #12 is overkill). Use a 20A fuse.