Re: [DML] RE: Upgrading horns
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Re: [DML] RE: Upgrading horns



Alex,
Here is a quick guide to installing a relay for the horns. If you are still 
uncertain about this, I would recommend finding somebody comfortable with 
automotive electrics to help you wire.

First buy a basic automotive relay (Radio Shack #275-226). There are 4 
terminals on this relay. Two perform the actual switching of the new horn's 
power and the other 2 power the coil. Take the existing power wire that 
went to one of the horns and connect it to a coil terminal. Now run a wire 
from the other coil terminal to a grounding point on the car. Now when you 
press the horn button, the relay will click on and off.

Next you need to run a heavy gauge wire from the battery to the relay (see 
if the horn manufacture recommends a minimum gauge). Make sure you put a 
in-line fuse by the battery as you don't want to start a fire if the wire 
shorts out! Once you get the wire to the relay, you need to connect it to 
one of the switch terminals. Now just run another wire from the last switch 
terminal to the positive side of the new horns. Make sure the horns are 
grounded and you should be set.

The relay works as a secondary switch. Pressing the horn button in the car 
simply activates the relay. The relay will now switch on the cars using the 
high power wire that you just ran from the battery. If you don't want the 
relay in front of the car, you can relocate it and power the coil off the 
horn switch inside the car. You will just have to find where to tap the 
horn wire, but the rest of the wiring will remain the same.

Hope this helps,
Chris
VIN 4099

At 05:21 AM 1/7/2006 +0000, you wrote:
>The stock 25 year old horns on my car sound like they are working loudly.
>They are as loud or louder than all the other stock deloreans I have heard.
>   I just want some real LOUD sounding horns.
>
> From my understanding if you just hook up louder horns and they draw too
>much current (even with car on) you can fry your wires in the steering
>column/horn switch.  I dont want this to happen.  I read in past postings
>that this happned to, "thereallasvegas".  I am confused on how to set up the
>relay.  Do you run all new wiring from the fuse box to the steering column?
>Or is it from the steering column to the horns?  Where does the relay go?
>Is there anyway to set this up without taking the steering wheel off?  These
>are the questions that torment me. :)  Does anybody have pics of the relay
>installed?
>
>Chris or others, if you can walk me through the relay set up I would really
>appreciate it.
>-Alex
>mauibarber@xxxxxxxxxxx





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