Rollospec, and All,
I have "fake" red blinking lights in all my cars, including the Viper. I just did it last week.
Here is what to do:
1. Go to a electronics store (Radio shack is OK, but I preferred a electronics store).
2. Ask for a 12V Blinking Diode.
3. Now, I thought it blinked a little too bright, so installed a 300 ohm resister to reduce the blink to about 9V. This is not critical 300 - 600 ohm resistance is OK.
4. Now the tricky part to wire it to blink with Ignition OFF, and not blink with the car running (ignition on).
Connect one wire (with the resistor, if used) to + 12 Volts (hot all the time). Connect the other wire to a + 12 Volts with ignition ON ONLY . I found this available from a blank position in the fuse block. (Fuse cavity # 10 on my '96 RT10).
5. I mounted mine in the console, just under the radio, a small hole. The blinking diode I purchased was self contained with mounting nut and nice looking flange. It is about 1/8 inch diameter bulb. Wish I had a digital camera (soon) , I would show the mounting.
OH, this cost about $2.50 at the electronics store, the resistors are about $.10 (10 cents) each. These draw about 20 milliamps, so forget about battery drawdown.
How does this work, connected this way??
When the ignition is OFF, the light will blink because the +12V source is available (one wire), and the other wire (connected to the +12V ignition ON only) acts as the ground.
When the ignition is ON, both wires have +12V potential (flowing), thus they cancel and react as if the wires were connected to NOTHING (will not blink).
These diodes can be obtained from:
Supertronics Inc.
16550 W. Valley Hwy.
Tukwila, WA, 98188
(425) 251-8484
The shipping might cost more than the diode.
I'm not sure I should do this, but (I may be sorry), I can go and get a number of these if you want me to get them and send them to you. There is no weight , and should be able to be sent to anyone (USA) for $5.00-$7.00 total including the diode.