use viper 791xv to turn on neon?
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=110905
Printed Date: May 12, 2025 at 12:37 PM
Topic: use viper 791xv to turn on neon?
Posted By: mikefletcher85
Subject: use viper 791xv to turn on neon?
Date Posted: January 22, 2009 at 11:52 PM
I have a Viper 791xv and had it installed. The other day I was going through some old boxes and found some Cold Cathodes (CC) that I was going to place in my car. I had some neon in there at one point but removed them because of the ugly switch. Then I got to thinking, my 791 has output channels that I can control with the remote. I did a little reading before I posted (I know, imagine that) but I'm just not 100% about how to do this. To complete this setup I assume I would use a relay, but what one? SPDT or SPST? Oh yea, here is the "technical" page for this CC I have: https://www.oznium.com/cathode-transformer/tech that transformer drives 2 tubes. I believe I have 5 transformers (not sure if I will use them all) but can I use just one relay for them all (I would want them all on at the same time)?
basically I would like to toggle channel 6 by pressing the Lock and * button on my remote to turn the CC's on and press again to turn them off, can this be done?
also a side question, I have a power inverter in my trunk that I took off the toggle switch (controls whether the inverter is on or off) attached some cheap speaker wire (as an extension wire) and placed a new switch by the drivers seat. Could I also control this from the Viper 791? I think the Viper has 3 output channels available.
PS according to the install manual, the Viper 791 outputs (-) 200mA when that button combo is pressed.
PSS also I'm not sure if I should have posted this in the Neon section, but I thought that because I want to control the CC's with my remote start system that this is where I should post it.
Replies:
Posted By: triniforever
Date Posted: January 23, 2009 at 4:53 AM
u can turn all those devices with your remote using relays however u first have to change the default settings on the alarm to latched outputs.and then configure the realys to operate those neons and whatever else u want to turn on.
------------- triniforever
Posted By: loneranger
Date Posted: January 23, 2009 at 6:36 AM
I would imagine the CC and transformers were designed to be operating when the engine is running, depending on how many are active. Otherwise, you could kill a battery pretty fast, if forgotten. I would build the relay circuits with the coils powered by the ignition. Either relay type will work. If you want to operate them with a switch also, then a SPDT will be needed. ------------- Ideal - cmon dude, add to topics in a useful manner, not stuff that is obvious.
Story - Phzzzt! Hey, what happened?! ... Isn't it obvious?
Moral - Never dismiss the obvious.
Posted By: mikefletcher85
Date Posted: January 23, 2009 at 9:13 AM
loneranger wrote:
I would imagine the CC and transformers were designed to be operating when the engine is running, depending on how many are active. Otherwise, you could kill a battery pretty fast, if forgotten. I would build the relay circuits with the coils powered by the ignition. Either relay type will work. If you want to operate them with a switch also, then a SPDT will be needed.
I dont really plan to run the CC's with the car off because of that exact reason. I doubt I will also want to run them from a separate switch, but is there a big cost difference between relays?
Also can I use a replay to replace the toggle switch on the inverter?
Also where would be the best place to purchase relays?
Thanks
~Fletch
Posted By: loneranger
Date Posted: January 23, 2009 at 9:21 AM
mikefletcher85 wrote:
...but is there a big cost difference between relays?
mikefletcher85 wrote:
Also can I use a replay to replace the toggle switch on the inverter?
- No. However, a relay will work.

mikefletcher85 wrote:
Also where would be the best place to purchase relays?
- Any electronics or automotive supplier.
------------- Ideal - cmon dude, add to topics in a useful manner, not stuff that is obvious.
Story - Phzzzt! Hey, what happened?! ... Isn't it obvious?
Moral - Never dismiss the obvious.
Posted By: mikefletcher85
Date Posted: January 23, 2009 at 10:06 AM
loneranger wrote:
mikefletcher85 wrote:
Also can I use a replay to replace the toggle switch on the inverter?
- No. However, a relay will work.

haha... I had to read that like 5 times to figure out I misspelled it...
Can I use just one relay to drive the CC's? If so what would I fuse the power? It looks like they have a max of .7A? Do I multiply that number by the number on transformers? (Sorry electronics noob, but I learn quickly)
What pin from the relay would I connect to the (-) 200mA output from the remote unit? Then would I ground the transformer and attach the power wire to 87a and the correctly fused live power wire to 30 on the relay? I guess my question is where do I connect the wires from the relay, It looks like there would be 4-5 wires.
Thanks the the quick responses, I really appreciate the help.
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