merlin alarm on harley davidson fatboy

Printed From: the12volt.com
Forum Name: Motorcycle Electronics
Forum Discription: Installing Stereos, Alarms, Remote Starters, Lights, Garage Door Openers and other electronics on motorcycles.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=113628
Printed Date: May 04, 2025 at 10:02 AM

Topic: merlin alarm on harley davidson fatboy

Posted By: tintmaster68
Subject: merlin alarm on harley davidson fatboy
Date Posted: May 06, 2009 at 9:03 AM

does anyone know what might be draining the battery on this fatboy i installed a merlin alarm from DEI and if its sits for a couple days the battery goes dead any help would be great

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Patrick

Replies:

Posted By: the12volt
Date Posted: May 06, 2009 at 9:48 AM

Did you add an ignition or starter interrupt relay? If so and if you used a constant 12V source instead of an ignition 12V source for the relay, that would be enough to drain the battery.

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Posted By: tintmaster68
Date Posted: May 07, 2009 at 9:48 AM

merlin alarm has built in relay for starter should i be bypassing the built in relay and tap into ign. wire?

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Patrick

Posted By: tintmaster68
Date Posted: May 07, 2009 at 9:50 AM

I really want to tell you how much i appreciate your advice THE 12 VOLT ROCKS!!!!!! posted_image

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Patrick

Posted By: the12volt
Date Posted: May 07, 2009 at 2:55 PM

If it has a built in relay, use it and make sure you connected the ignition input of the alarm to an ignition 12V source (wire only shows 12V when the key is in the on/run position). Did you connect any other accessories or relays? If so, please list them.

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Posted By: tintmaster68
Date Posted: May 08, 2009 at 7:06 PM

yes i put in a relay for LED's its on channel 2 whitch is a latched system i have the relay direct from the battery should this be changed? this unit also has a battery backup siren whitch i have installed before and never had a problem .

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Patrick

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