trunk popper: want circuit off when car is running

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ohmysac

Member - Posts: 12

Joined: October 10, 2002

Location: United States

Posted: October 10, 2002 at 10:43 AM / IP Logged

i'm wiring a trunk popper using this wiring(not sure if this could work or not:

trunk popper: want circuit off when car is running -- posted image.

but i'd like to make it so the trunk wont pop if the car is running...i dont want my trunk flying open as i'm going down the road! :) how would i go about doing that? thanks!!!

the12volt

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Joined: March 07, 2002

Location: Louisiana, United States

Posted: October 10, 2002 at 11:21 AM / IP Logged

Typically your second channel will not work when the ignition lead is showing 12V+, but you can use an additional relay to open the second channel output to the relay when there is 12V+ showing on the ignition lead and wire the two relays as follows if your second channel output from the alarm is a negative output..

Relay 1 (used to pop trunk)

85 to 87a of second relay

86 to constant 12V+

30 to constant 12V+

87 to positive lead of solenoid

87a not used

Relay 2 (used to inhibit channel 2 output)

87a to 85 of first relay

30 to second channel negative output from alarm

86 to ground

85 to ignition lead

87 not used

If the alarm's second channel output is a positive output, connect terminal 86 of the first relay to ground instead of 12V+.

the12volt

ohmysac

Member - Posts: 12

Joined: October 10, 2002

Location: United States

Posted: October 10, 2002 at 3:52 PM / IP Logged

my 2nd channel output does operate when the ignition is on....and it is a positive output of 0.6v ...will this be a problem?

the12volt

Administrator - Posts: 3,957

Joined: March 07, 2002

Location: Louisiana, United States

Posted: October 10, 2002 at 4:18 PM / IP Logged

No, not at all, connect it as follows:

Relay 1 (used to pop trunk)

85 to 87a of second relay

86 to ground

87 to positive lead of solenoid

87a not used

Relay 2 (used to inhibit channel 2 output)

87a to 85 of first relay

30 to second channel positive output from alarm

86 to ground

85 to ignition lead

87 not used

Anytime the ignition is on, the coil of the second relay is energized and opens the connection of the alarm's positive output to the coil of the first relay preventing the trunk from opening via your remote.

the12volt

ohmysac

Member - Posts: 12

Joined: October 10, 2002

Location: United States

Posted: October 10, 2002 at 4:33 PM / IP Logged

what type of relay do you recommend? i know spdt but what brand and specs? i'm just learning about all this electrical stuff...my concert was that the 2nd channel output wouldnt be strong enough to energize the coil

go2pac

Copper - Posts: 179

Joined: May 04, 2002

Location: California, United States

Posted: October 10, 2002 at 5:39 PM / IP Logged

You sure its a positive 0.6 volts? If it is, its not enough to energize a relay. I think you are measuring it incorrectly. One test lead should go to a constant 12volt source and the other lead to the 2nd channel wire. When activated, you should measure 12volts. That would be a negative output.

Karl

Pacific Accessory Corporation

Mobile Audio Interfacing Equipment

Connecting You to Your Music Since 1976

ohmysac

Member - Posts: 12

Joined: October 10, 2002

Location: United States

Posted: October 10, 2002 at 5:48 PM / IP Logged

ahh...thank you for showing me the way! i'll go try this...i'll keep you updated...

the12volt

Administrator - Posts: 3,957

Joined: March 07, 2002

Location: Louisiana, United States

Posted: October 10, 2002 at 5:50 PM / IP Logged

Glad you spotted that Karl, my bad. That won't be enough to energize the coil of a relay.

What alarm are you using ohmy? If you do have a negative output, connect the relays as I described in my first reply.

ohmysac

Member - Posts: 12

Joined: October 10, 2002

Location: United States

Posted: October 10, 2002 at 6:05 PM / IP Logged

i dont know if i do or not...i have no wiring diagram...

its an autopage rf-1055KE ---> http://www.autopageusa.com/autopageusarf1055ke.htm

go2pac

Copper - Posts: 179

Joined: May 04, 2002

Location: California, United States

Posted: October 10, 2002 at 10:50 PM / IP Logged

Though the12volt first post would work, this one here would not energize any relays until you need to pop the trunk. When the ignition is off the ignition wire will supply ground for the second relay.

trunk popper: want circuit off when car is running -- posted image.

Karl

Pacific Accessory Corporation

Mobile Audio Interfacing Equipment

Connecting You to Your Music Since 1976

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