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Old 10-11-2005, 01:12 AM   #1
thsiao
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Exclamation Urgent help!!! What is what in a relay...

Is 85 the Ground on the relay and 86 where I hook up my Hella Supertones or is it backwards?
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Old 10-11-2005, 01:28 AM   #2
pityr
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Im spacing out alittle here but I believe it should be constant power to 30. Power wire to the hellas on 87. Switched power on 85 and ground on 86. Ground the hellas to the chassis.
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Old 10-11-2005, 02:10 AM   #3
thsiao
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Quote:
Originally Posted by pityr


Im spacing out alittle here but I believe it should be constant power to 30. Power wire to the hellas on 87. Switched power on 85 and ground on 86. Ground the hellas to the chassis.
I'm confused... according to this LINK and the place where I bought my Hellas, GND is suppose to be on 85 and signal on 86... which way is it?

People that have the Supertones with the relay installed please help me!
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Old 10-11-2005, 02:16 AM   #4
pityr
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Quote:
Originally Posted by IntraWRX
pin 30: +positive from battery (i put an inline 20A fuse here)
pin 86: stock connection from original horn (you only need one of the original horn connections-- i've got the 2 hellas and the oem driver side horn hooked up)
pin 87: to hella horns (you'll need to split this signal, or daisy chain the horns)
pin 85: to battery ground (-)
quoted from the linked thread.

I have 4 hella's isntalled BTW.

ussually 85 and 86 are interchangeable. One is just the signal from your stock horn and the other is the ground.
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Old 10-11-2005, 02:20 AM   #5
rubasu2
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You do not need to add a relay for the Hella Supertones.

Unless you like pityr and intend to hook up four horns.

-Brian
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Old 10-11-2005, 03:21 AM   #6
00Maddog
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four horns!! crap that must be loud.

yeah 85 and 86 can be switched, makes no difference.
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Old 10-11-2005, 12:14 PM   #7
thsiao
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Quote:
Originally Posted by 00Maddog
four horns!! crap that must be loud.

yeah 85 and 86 can be switched, makes no difference.
Ok great... one more question... is there another way of testing to see if both horns are working besides unplugging one? Kinda lazy to unplug and stuff...
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Old 10-11-2005, 12:40 PM   #8
2phless
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If only one horn sounds it won't really sound 'horn like.' Like one flat note. Loud, but not 'piercing'. Each is a different note, that, in a chord, produces that unpleasant resonance.

Without unplugging one I don't know how to describe the sound of one horn blowing.

For reference: It's louder than the sound of one hand clapping.
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Old 10-12-2005, 08:02 AM   #9
Wires
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Quote:
Originally Posted by 00Maddog
four horns!! crap that must be loud.

yeah 85 and 86 can be switched, makes no difference.
Usually that's true, but if you are using a relay with diode supression, they become non-interchangeable.

For relays with resistor supression, or no supression, they are indeed interchangeable.
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Old 10-12-2005, 08:32 AM   #10
Mulder
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85 and 86 are always the relay coil. As Wires said they are interchangeable unless the relay has an internal suppression diode, if it does the cathode side of the diode must get the positive connection, and the anode the negative. If there is a diode it will be shown on the diagram on the outside of the relay. The standard automotive "cube" relays (Hella, Bosch etc.) generally do not have the diode.
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Old 10-12-2005, 04:36 PM   #11
davis10
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Quote:
Originally Posted by thsiao
Ok great... one more question... is there another way of testing to see if both horns are working besides unplugging one? Kinda lazy to unplug and stuff...
VOLTMETER
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Old 10-13-2005, 06:11 PM   #12
909
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Sorry to hijack.

If I wanted to add a relay to my aftermarket HID's, how would I wire it up?
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Old 10-13-2005, 06:24 PM   #13
armand1
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Depends on what you are trying to achieve. I'd search this forum for some good threads.
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