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2001 Mustang GEM problems


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lanman31337 
Copper - Posts: 83
Copper spacespace
Joined: August 11, 2005
Posted: January 17, 2007 at 6:49 PM / IP Logged  
Hi, so I did a remote start on a 2001 Ford Mustang, and as we all know, it's got GEM.  I double Dioded (diode at the door trigger, diode at the remote start end for the door trigger) and gem still keeps on tripping it.  What am I missing?
profuse007 
Gold - Posts: 2,015
Gold spacespace
Joined: October 20, 2002
Location: Texas, United States
Posted: January 17, 2007 at 7:44 PM / IP Logged  
gem module---- ->- ----door switch
door triiger input goes b/t that diode and door switch
diode isolate if more switches available
Houston,TX
"The two most common elements in the universe are H+ and stupidity" (Ellison).
lanman31337 
Copper - Posts: 83
Copper spacespace
Joined: August 11, 2005
Posted: January 17, 2007 at 8:35 PM / IP Logged  
I have it like this:
GEM -----|-- ---- --|------ door trigger from remote start
I only have the driver's side door trigger hooked up because that's the only trigger hooked up on the remote start.
profuse007 
Gold - Posts: 2,015
Gold spacespace
Joined: October 20, 2002
Location: Texas, United States
Posted: January 17, 2007 at 10:09 PM / IP Logged  
just wire like above, diode faces the door trigger, aka ->|-.
Houston,TX
"The two most common elements in the universe are H+ and stupidity" (Ellison).
lanman31337 
Copper - Posts: 83
Copper spacespace
Joined: August 11, 2005
Posted: January 18, 2007 at 5:49 AM / IP Logged  
I do, the one for the door trigger/gem itself has the stripe away from the GEM.
Mike M2 
Platinum - Posts: 2,652
Platinum spacespace
Joined: June 29, 2005
Location: United States
Posted: January 18, 2007 at 6:41 AM / IP Logged  

http://www.directechs.com/techtips/pdfs/resources/security/directed_techtips/1076.pdf

How about the trunk wire? Did you isolate that too?

Mike M2
Tech Manager
CS Dealer Services
lanman31337 
Copper - Posts: 83
Copper spacespace
Joined: August 11, 2005
Posted: January 18, 2007 at 6:17 PM / IP Logged  
I didn't hook up the remote start to the trunk at all, does that make a difference?
NowYaKnow 
Gold - Posts: 1,217
Gold spacespace
Joined: December 18, 2002
Posted: January 18, 2007 at 10:02 PM / IP Logged  
It sounds like you have 2 diodes inline on the same wire.. Did you actually CUT the OEM door trigger wire and put a diode inline on that? That is the only diode that matters in this case the other one is useless and not needed if your only hooking up the driver door. The diodes that you put inline with the cut wires isolate the gem signal, the other diodes on your door trigger wire just keep the seperate door triggers, seperate.
Mike
lanman31337 
Copper - Posts: 83
Copper spacespace
Joined: August 11, 2005
Posted: January 19, 2007 at 6:51 AM / IP Logged  
I cut the oem door trigger wire at the gem and put the diode inline.
profuse007 
Gold - Posts: 2,015
Gold spacespace
Joined: October 20, 2002
Location: Texas, United States
Posted: January 19, 2007 at 8:28 AM / IP Logged  
What the GEM is doing is that it send a very low voltage pulse back toward the door trigger. The diode is there inline to prevent it.
If you put a diode inline there and put your trigger-input on the right side of the diode, then there shouldn't be any false trigger occured.
Houston,TX
"The two most common elements in the universe are H+ and stupidity" (Ellison).
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