Viper 5906v on a 2000 Cadillac Deville

Take a look at another relay and see if the diode is the same. If so, make a note and just swap pin 85 and 86. Your starter brain is probably toast at this point though.

I looked at another that was pulled out my old car and it's the same. A few things different but diode the same, it has. 30 ign wire 86 ground when running (anode) 87 12v 85 acc on alarm (cathode) We Ride

But of course there is no power on that 86We Ride

85 positive acc wireWe Ride

Yeah, the coil doesn't care which side is positive or negative, it only matters if a diode is connected across. Common wiring practice is pin 86 is positive. Evidently yours are not.   In the case of your other example, that was wired correctly regarding the diode.

Do i need the diode, will it really hurt not to have itWe Ride

I just learned something from this thread, that has never occurred to me. That if you get the polarity on the anti-spike diode wrong, you can feed your (-) trigger with 12+ volts. This of course destroys the output in the module, and if the output is common to another output you also need, that output won't won't work any more either. I don't use anti-spike diodes UNLESS I am controlling two relays from the same output. Then I do, because the back-EMF now has twice the potential. I have never seen DEI ask for anti-spike diodes. I've opened several modules and all (-) triggers seem to have current-limiting resistors on them. My installs that don't have them have functioned for years. I'm aware that there is an individual here that strongly advocates the use of anti-spike diodes. (Hint: I affectionately call anti-spike diodes "Howie Diodes" in deference to his advocacy). I let it go, because it doesn't matter to me, and they won't hurt anything. Well, Yes they will, if installed backwards. And very probably won't harm a thing if they are left out. I don't think we should recommend them any more. They don't seem to save any modules. Parts left out, can't be installed incorrectly.

I have an idea as to how to "save" your existing module with the fried orange ACCY output. Remove the pink/wht large wire from the car's white IGN2. Use a relay to power the IGN2 white wire. Use the 24-pin pink 200ma (-) output to control this relay. Reprogram the FLEX output (pink/wht) to ACCY. Use two relays for the car's ACCY brown and orange wires. Connect the large pink/wht to both relays' #86. Connect both relays' #85 to GROUND. Yes it adds 2 more relays, but do it cleanly, and the install will last for the life of the car.

davep. wrote: Connect the large pinkwht to both relays' #85. Connect both relays' #85 to GROUND.

I assume that is a typo. However, barring that, Dave's idea is a good one.

Yes I just fixed it. Now that I'm under you, you can't edit yours.