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Old 12-06-2017, 09:29 AM   #1
wiz561
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Default Grounding Aftermarket Alarm

I'm going over my aftermarket alarm and remote starter installation and have a question about grounding. Almost everything I read says to not use factory ground locations. Well, I ended up grounding mine to a bolt in the drivers side kick panel that has other ground wires running to it.

Now part of me thinks it's OK because it's a good ground. But the other part of me thinks that for some reason, the remote starters/alarms don't want to share the ground. Should I look for something else?
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Old 12-06-2017, 09:57 AM   #2
phd12v
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i use pin #4 at the obd2 connector
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Old 12-11-2017, 11:42 AM   #3
wiz561
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Quote:
Originally Posted by phd12v View Post
i use pin #4 at the obd2 connector
I don't know, but I think that the OBD2 connector ground isn't the best place. The reason I say this is because a long time ago, I had engine whine from a head unit and amp I installed. Moved it from a ground wire to a bolt and everything was fine.

But if it works....why mess with it.
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Old 12-12-2017, 12:58 AM   #4
corlon
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your fine using a factory ground location for your remote start security system. your not really drawing any current for this application.
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Old 12-12-2017, 02:41 PM   #5
phd12v
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Quote:
Originally Posted by wiz561 View Post
I don't know, but I think that the OBD2 connector ground isn't the best place. The reason I say this is because a long time ago, I had engine whine from a head unit and amp I installed. Moved it from a ground wire to a bolt and everything was fine.

But if it works....why mess with it.
if your not familiar with pin 4 at the obd2, i can understand why you "think" that way
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Old 12-12-2017, 08:55 PM   #6
Drew18WRX
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I always tap my own ground when doing a remote start/alarm. I dont like using factory ground points.
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Old 12-13-2017, 10:48 AM   #7
phd12v
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https://i.stack.imgur.com/vJB6W.png


here is the standardized pinout
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