the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
icon

Passive Fuel Kill w/ Remote Start


Post ReplyPost New Topic
< Prev Topic Next Topic >
stook1 
Member - Posts: 1
Member spacespace
Joined: November 11, 2003
Location: United States
Posted: November 11, 2003 at 2:55 PM / IP Logged  

Sorry - formatting on previous post was not good.  I guess from pasting from word.  Hopefully this one will work better!

I am doing a Viper 791XV install on a Subaru WRX. The car will be setup with remote start. The car does not have an immobilizer from the factory. As such, there is a need to install a passive fuel pump or ignition kill (since the car is a manual transmission vehicle - the standard starter kill for the Viper will not be particularly beneficial since the car can be push started). I am leaning towards the fuel pump kill since the circuit is simple compared with the ignition circuit.

Can someone please provide me with assistance in designing this circuit. The fuel pump circuit should always be open when the alarm is armed. If the brain is disconnected/bypassed, the fuel pump circuit should remain open. If the car is remote started, the fuel pump circuit needs to close, although the alarm needs to remain armed. If the alarm is disarmed, it should be possible to either remote start, or start with the ignition key.

The only way I can think of doing this is by powering two relays whenever the alarm is armed to keep these relays open (using the orange wire to ground off the brain when armed). Unfortunately, I am not sure how good of an idea it is to power the relays permanently whenever the alarm is armed - ie. Risk of part failure, and risk of battery drain.

Also - I am not sure if this is or is not a factor - but I do not want to lose the anti-grind functionality on remote start, and I also intend to a prevent remote start if the transmission switch does not show neutral and e-brake is not engaged.

I am thinking there MUST be a much better solution for handling this. Perhaps a latched relay setup? Thanks in advance for any help that can be provided.

desh187 
Copper - Posts: 310
Copper spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: September 13, 2002
Location: Canada
Posted: November 12, 2003 at 11:46 PM / IP Logged  
i would suggest an ignition kill which is simpler ,just cut green wire at ignition harness and install a relay as you would for starter kill which will save you lot of time.

Sorry, you can NOT post a reply.
This topic is closed.

  Printable version Printable version Post ReplyPost New Topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

  •  
Search the12volt.com
Follow the12volt.com Follow the12volt.com on Facebook
Sunday, July 13, 2025 • Copyright © 1999-2025 the12volt.com, All Rights Reserved Privacy Policy & Use of Cookies
Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

Secured by Sectigo
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
Support the12volt.com
Top
the12volt.com spacer
the12volt.com spacer