Flex Relay Wiring

Hi Forum,

I did some searching and didn't find much on flex Relays and Viper systems install. What I do now know it's pretty much either a 4 pin or 5 pin relay. I see the wiring instructions call for 87a etc pins on the relay- can anyone shed some light on the common configurations for Flex relays as I guess there are flex standards for the 4 pin and 5 pin relays?

Not sure I understand "flex" part of your question and if it directly relates to the Viper
and its' Flex Relay. Anyway, this site has some good basic info on relays here :
https://www.the12volt.com/relays/spdt-and-spst-automotive-relays.asp
And useful list of relay application diagrams here :
https://www.the12volt.com/relays/relaydiagrams.asp

The Vipers Flex relay is an internal ignition output relay that can be programmed
to either Ignition2 ( default ), Accessory2 or Starter2. Be aware that on some DEI
R/S units ( i.e. 4105 ) Starter2 is not supported.

The only other relay convention concerns coil polarity. As mentioned in the relay
info, sometimes a relay will have a diode across its' coil. If it does, it is important
that Pin 85 receive the (-) input and Pin 86 get the (+) input. Many installers will
add this diode across pins 85 and 86 to protect the device that supplies the coil input.
This is called "coil quenching" and prevents a high voltage spike that is generated
when the coil field collapses from damaging connected devices. The quenching
diode is typically a 1N4007 although a 1N4004 should be sufficient.

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Soldering is fun!