here is my idea... on the momentary contanct switch part from this diagram... can i use a reed switch(switch triggered by a magnet) and just have the magnet there when i start the car, and then remove it after.... i wanted to do this on my fuel pump as well but i think that would need constant power right

 

help... this is a morning project!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EeeJayEight &raquo;</TD></TR><TR><TD CLASS="quote">here is my idea... on the momentary contanct switch part from this diagram... can i use a reed switch(switch triggered by a magnet) and just have the magnet there when i start the car, and then remove it after.... i wanted to do this on my fuel pump as well but i think that would need constant power right

</TD></TR></TABLE>The ign. will also need a constant power you could add a latching relay, ign. to 86 and momentary ground to 85 power to 30 and 87 of latching relay to 85 of the starter relay and ign relay and wire the ign. relay the same as starter relay, [interrupt the ign. line] 94

 

i already have an ignition kill, what i want is to be able to press the momentary switch when i get out of the car that will kill the fuel pump, then when i get back in the car, i somehow run a magnet over a spot where my reed switch is to enable the fuel pump. any idea how to do this?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EeeJayEight &raquo;</TD></TR><TR><TD CLASS="quote">i already have an ignition kill, what i want is to be able to press the momentary switch when i get out of the car that will kill the fuel pump, then when i get back in the car, i somehow run a magnet over a spot where my reed switch is to enable the fuel pump. any idea how to do this?</TD></TR></TABLE>Ok..... you show a starter and ign. kill sw. but this will work, I cant show you , but I can tell you you need 2x SPDT relays, [just like the ones you show] we will call them relay 1 and relay 2............ on relay 1- 86 will come from momentary ground reed switch, 85 of relay 1 and relay 2 will come from a true ign. [has power evan when cranking motor to start] 30 of relay 1 will go to ground, 87a is not used, 87 will go to 86 of relay 1 and relay 2, 30 of relay 2 will come from fuse side of fuel pump wire , 87a is not used. 87 will be fuel pump side wire, when you pass magnet over reed sw., [ with ign. on] it will trip relay 1, and because 87 of relay is wired to 85 of relay 1 and 2, it will latch relay 1 and 2, [evan after reed sw. is opened] relay 1 will supply a ground to relay 2, [latching it] turning off the ign. will delatch the relays, giving you a "passive" fuel pump cut off, [no need to push any sw.] 94

 

thanks alot man

so is this what the schematic would look like then???



also, what if i wanted it to not be passive, so i dont have to do it all the time??

 

Yes thats it, if you didn't want it to "arm" you would also have to add a non momentary sw., [ SPST] to 86 of relay 1 to supply a constant ground 94

 

awesome... thanks alot man

 

Why not just use a much more simple setup - have the relay kill the starter when the magnet is in place. I doubt a car theif would think to remove the tiny maget velcro'd next to the e-brake.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HiProfile &raquo;</TD></TR><TR><TD CLASS="quote">Why not just use a much more simple setup - have the relay kill the starter when the magnet is in place. I doubt a car theif would think to remove the tiny maget velcro'd next to the e-brake.</TD></TR></TABLE> That would mean 1- the relay would be on, [and drawing power] when the car is off, 2- It would not be passive. 94

 

here's my starter kill used in my car...everytime you get in my car you have to type a code to start the car. and the ignition is no longer hot wireable with this keypad.

also the # key flashes red to show its armed and there is also valet mode. and yes this thing operates off a relay as well. and lastly i wired the wires inside the engine bay look factory. even my mechanic friend had a hard time trying to find where the starter wire was....i had to show him. haha.

 

Where did you get that? Who makes it? Looks interesting, I would like more info.