451m in 2007 dodge charger

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mugpar

Copper - Posts: 100

Joined: January 28, 2003

Location: United States

Posted: September 07, 2008 at 7:40 PM / IP Logged

I wired the 451 like this:

WHITE/ black & BROWN / black go to ground.

Purple is going to 12v

GREEN/ black with a 100 ohm resistor

blue/black with a 330 ohm resistor, both this wire and the GREEN/ black wire are running to the PURPLE / dark green in drivers kick panel.

When i hit unlock, you here the doors unlock, but it's like there isn't enough power to actually make them move, but lock works fine.

Any ideas?

Mike M2

Platinum - Posts: 2,652

Joined: June 29, 2005

Location: United States

Posted: September 07, 2008 at 9:01 PM / IP Logged

I'm surprised they work at all. WHITE/ black and BROWN / black should not go to ground, cut them and tape off the ends. The purple should be grounded not 12volts.

Mike M2

Tech Manager

CS Dealer Services

mugpar

Copper - Posts: 100

Joined: January 28, 2003

Location: United States

Posted: September 07, 2008 at 9:23 PM / IP Logged

Thanks for the reply, so nothing goes to 12v at all?

Mike M2

Platinum - Posts: 2,652

Joined: June 29, 2005

Location: United States

Posted: September 08, 2008 at 6:37 AM / IP Logged

Just the thin red wire, which is in the small plug. This is power to trigger the relay, along with the other two wires in the plug. It gets this from the alarm brain so just plug it in. The lock system in the car is a resisted negative pulse type, which means you need to supply ground thru a resistor to operate the locks(provided a 2008 is the same as a 2007 which i belive it is). The purple(and PURPLE / black) are the feeds to the relay so they go to ground. You would only use the white and brown striped wires if your locks were 5 wire type....

Mike M2

Tech Manager

CS Dealer Services

mugpar

Copper - Posts: 100

Joined: January 28, 2003

Location: United States

Posted: September 08, 2008 at 4:46 PM / IP Logged

ah ok, thanks a lot for the info.

joch1314

Copper - Posts: 301

Joined: March 25, 2008

Location: Texas, United States

Posted: September 08, 2008 at 5:00 PM / IP Logged

Just a question for my reference....couldn't he just forget about using the 451m altogether. I'm thinking, that he can just take the lock/unlock leads from the two wire (blue/green) harness and insert the proper resistor values for lock/unlock and go directly to the wire in the vehicle? Wouldn't that work too?

...half of the truth can be worse than a lie. <----Roger Russell said that..

mugpar

Copper - Posts: 100

Joined: January 28, 2003

Location: United States

Posted: September 09, 2008 at 2:26 AM / IP Logged

So I left the 451M hooked up last night by accident how i stated in the first post, and my battery is dead, could this wiring drain my battery?

Mike M2

Platinum - Posts: 2,652

Joined: June 29, 2005

Location: United States

Posted: September 09, 2008 at 6:54 AM / IP Logged

To answer Joch question, no. Those wires are both positive and negative lock outputs. When you press lock, the green is a neg and the blue is a pos and they would short against each other(at least on most alarms). As for the dead battery i doubt it. Even a tripped relay would take more than a night to kill a battery if it was good(i assume a new car would have a good battery) plus it would have been occuring the day you connected it this way not just start now.

Mike M2

Tech Manager

CS Dealer Services

mugpar

Copper - Posts: 100

Joined: January 28, 2003

Location: United States

Posted: September 09, 2008 at 7:28 AM / IP Logged

Thanks for your response Mike. I will have to do some digging to figure this one out.

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451m in 2007 dodge charger

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