I have a Viper T56 and I need to know which wire is which on the VSS harness. There are three wires. Any ideas where to get a pigtail for this sensor and wire diagram? Local Dodge dealer doesn't have a clue. I will be running the output to a vss ratio adapter made by Abbott. then to a Cable-X converter to run a mech. speedometer. Any help you can offer would be great!

Why did you buy a ratio convert and the Cable X box? The Cable X box will do the ratio conversion thing for you so you don't need that other piece.

Not sure about the wiring. My T56 that came out of a 94 camaro only had a 2 wire VSS plug.

Are you sure the Cable X can change the speed of the speedometer cable? I thought it just takes a vss signal and drives the cable accordingly. I plan on using the ERA to slow the signal because I'm using a speedometer that registers kilometers. So when its all done, I should have a 200 mph speedometer in my 64 Lemans.

Yes. The Cable X box has dip switch that you use to control the speed of the speedometer cable. You have to do a caculation based on tire size, axel gear, and reluctor ring in the tranny and then use a table in the book to look up the proper dip switch setting. It has a huge selection of settings. You may run into problems since you are using a kph speedometer but probably not.

Cool! I called Abbott and they can even build it with a 5 volt lead to power the VSS. You just saved me about 200 bucks by not having to buy the ERA! Thanks!

let me know if you get the wiring figured out, i'd appreciate it, i have a viper t56 also with the 3 wire VSS, i'll be running a universal autometer speedo, so i'll be hooking up direct if i can get the wiring figured out.

The guy at Abbott is going to get me the schematic. I also have a diagram from the Dodge dealer. I'll try to post it...

i'm wondering if it would still work if i gave it a 12 volt input? as in, does the VSS just pulse whatever voltage is input into it, or would it damage the VSS? i'm thinking maybe the dodge diagram calls for a 5V input because that's what the factory speedo is looking for...at least, it would be awesome to me as i'm using a Autometer speedo, as i don't know how i'd get a 5V input into it...

I wouldn't try 12v into the VSS. It would eventually overheat and fail. The speedometer isn't looking for a specific voltage, but rather a number of pulses per mile. I don't know the voltage of the pulses. Here is a site that sells a 12 volt to 5 volt DC converter. It's way cheaper than a new VSS.

http://www.powerstream.com/power3.html

thanks, that should work.

Here is some info on the wiring for the Viper....

you have a part number for the pigtail? that would be very helpful

I've never been able to find a pigtail for the VSS. I just made my own. Here are the other pigtails I am using: (GM part numbers)

12085485 CONNECTOR $12.85 (reverse light switch)
12101857 CONNECTOR $13.24 (reverse lockout solenoid)

Try GMpartsdirect.com for these prices, but shipping was another $13.79.

I just completely removed the skip shift solenoid and plugged the hole.
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If you need a 5v converter, let me know... after I talked to Abbott, I tried to cancel my order with Powerstream, but I think they still shipped it anyway. I'll let you know if it shows up.