Diodes needed?

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antol11

Member - Posts: 6

Joined: December 20, 2004

Posted: January 08, 2005 at 9:38 AM / IP Logged

Hi,

I am installing 4 DEI 805D motion sensors externally on a vehicle (they each have their own enclosures). My question is will I need dioes on the trigger outputs? I have tried to contact DEI but I couldn't get a hold of someone to speak with. Currently I have them wired up to the aux shock sensor input of a Code Alarm 425 alarm unit without diodes and I am having a problem with faulty triggering. For example when if you trigger the first stage warning it will immediately trigger a full alarm even though the full alarm was never triggered.

Also is it ok to power all 4 motion sensors fromt that aux shock sensor input? Or should I power them from a battery wire?

Thanks,

Bogdan

gcorrea

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Joined: May 22, 2004

Location: United States

Posted: January 12, 2005 at 1:43 AM / IP Logged

any time you are using two or more sensors you have to diode isolate. do you mean the 508D proximity sensor?

gcorrea

jaurora

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Joined: January 16, 2004

Location: United States

Posted: January 12, 2005 at 7:27 AM / IP Logged

I hope not. 4 508D's is a little overkill!!

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Jeremy

misterjimbo

Silver - Posts: 535

Joined: October 11, 2003

Location: Michigan, United States

Posted: January 12, 2005 at 7:39 AM / IP Logged

it has been my experience with 508 d's that if you power them from the shock port that it gets quite a few false alarms. may i make a recommendation? get your power and ground independantly for each sensor. 4 sensors is a bit much dont you think? to each thier own

Jschult3

Copper - Posts: 106

Joined: December 25, 2004

Location: United States

Posted: January 12, 2005 at 4:34 PM / IP Logged

Yeah 4 sensors is a little much and you should always diode any time 2 triggers are involved.

I think DEI even suggets using 1 trigger from that power source only. Don't quote me though.

Jeff

Always Verify Wire information before Connecting! Just a Darn Good DIY'R

auex

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Joined: December 23, 2002

Location: Arizona, United States

Posted: January 12, 2005 at 5:36 PM / IP Logged

You are not supposed to power more then one sensor of the fourpin shock harness plug.

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Diodes needed?

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