alarming my fuel door

Hi

I am in the boat as you just wanted to know if you used the extra hood pin for your gas door? and if it works.

I have the same viper as you but i have the trunk - wire free or i dont know if can use the same green ground wire that go's to my bypass?

Did you ever get it to work?

Thanks

I see this is an old thread... but I have the same question as originally posted. Where can I find a magnetic reed switch suitable for this? I've wired a set of horns directly from the battery, with a toggle switch in the cab of my truck to switch the system off or on.  When switched on, the power will be blocked by the switch at the fuel door, and when opened, the circuit completes, and power is fed to the horn relay, which in turn feeds the horns. Of course, if I don't want an ear-full at the pump, i just push the toggle to "off" and then i'm free to open it without any racket.

i just need a reed switch that can handle the current flow. anybody have any suggestions?

http://www.radioshack.com/product/index.jsp?parentPage=search&summary=summary&cp=&productid=2419298&accessories=accessories&kw=magnetic+switch&techSpecs=techSpecs&currentTab=techSpecs&custRatings=custRatings&sr=1&features=features&origkw=magnetic+switch&support=support&tab=summary

Above is a switch that should work for you.  The only problem I see is that I am not able to find any specs of the current capacity of the switch.  A standard Bosch/Tyco relay has a 75 ohm coil, thus making it pull 160 milliamps to keep it energized.   Using this switch the way the other guy was using it would be no problem.  He was connecting it to an alarm.  The following link is to a relay that pulls only 30 milliamps.  The switch is going to be able to handle this current.  I have no idea how much current your horns pull, but if it is close to the 10 amp max of this relay, you may have to make this relay trip the bosch/tyco relay and let it handle the current.

http://www.radioshack.com/product/index.jsp?productid=2062482&cp=&sr=1&origkw=relay&kw=relay&parentPage=search

i see what you're saying. i found that switch last night and wondered the same thing. i'm sure the horn relay i've got pulls around 160 mA as you stated. horns take quite a bit. 2nd only to the starter.

so let me see if i got you right. i run wire from the switch to the 10A relay, and then from that relay, connect it to the horn relay. so id essentially be using one relay to feed the other. correct?

Correct.   If when you purchase the switch, there is a spec sheet with it, maybe they have the current capacity of the switch.

If it is capable of 500Milliamps, you can go agead and run your relay directly. 

this is directed towards the beginning of the post where people were saying to use the unused -trigger wire (to the fuel door) in addition to the +trigger wire (already attached to car doors). I know someone who tried to use both - and + triggers and it freaked out his alarm. just make sure you can use both triggers without confusing the unit.

Jonathan