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Old 07-15-2013, 07:51 PM   #1
sickpuppy1
 
Drives: 2010 Yaris Sedan
Join Date: Feb 2010
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Quote:
Originally Posted by jcboy View Post
check if your horns are grounded correctly. you can ground both your horn's negative terminal and pin 86 of the relay through the battery's negative terminal.

relay clicking means current through 85 and 86, also means connectivity of 30 to 87, meaning power to the horns. the question is whether your horns are grounded correctly to use that current.

Relay : What
85 : OEM/original horn wire
86 : ground (together with Horn's Negative wire)
30 : batt +12V
87 : Horn's Positive wire
I have the horns set up for chassis ground, but I can run a ground to the battery also for it too.The relay is grounded to battery,I'll redo the ground to the relay, but understand, with either the after market relay or the new relay that came with the new horn the relay getting power and you can feel it click but it doesnt close the contacts in either to pass power for 12v+. So no 12v+ on the output side.
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Old 07-15-2013, 08:36 PM   #2
CTScott
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Quote:
Originally Posted by sickpuppy1 View Post
I have the horns set up for chassis ground, but I can run a ground to the battery also for it too.The relay is grounded to battery,I'll redo the ground to the relay, but understand, with either the after market relay or the new relay that came with the new horn the relay getting power and you can feel it click but it doesnt close the contacts in either to pass power for 12v+. So no 12v+ on the output side.
Measure the voltage between the two coil terminals with the horn pressed.
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