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VSS in Stripped Rock Krawler

Printed From: the12volt.com
Forum Name: Cruise Controls
Forum Discription: Cruise Control Settings, Tach Signal, VSS PPM(Vehicle Speed Signal Pulses Per Mile), Vacuum, Brake, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=88595
Printed Date: May 03, 2025 at 6:14 PM


Topic: VSS in Stripped Rock Krawler

Posted By: allanr2
Subject: VSS in Stripped Rock Krawler
Date Posted: January 08, 2007 at 5:42 PM

Just got a Nordskog digital speedometer. I am a complete amateur when it comes auto eletrical stuff, so maybe someone could help a bit...

My jeep trail rig runs on propane, so I don't have any emissions stuff & no computer at all. Just a couple necessary wires under the hood. Its a 12volt system. Have a hall-effect 3-wire vehicle speed sensor(VSS).... 3 circuits: Ground, signal, and 5 volts supply from PCM (Powertrain Control Module) Jeep computer.

How can I get that 5 volt supply/voltage drop to the VSS with no computer?

Thanks.



Replies:

Posted By: ituneyou
Date Posted: January 12, 2007 at 2:45 AM

it looks like all you want to do is step down from 12 volts positive to 5 volts positive to power up your pulse generator, this should work, go down to your local radio shack store and get a cigarette lighter adapter that puts out different voltages, they usually put out anywhere from 9 volts to 3 volts, set it on the right voltage you need and you should be in business, you might want to get a female cigarette lighter plug also so you can hardwire the adapter and stick it behind the dash somewhere.

hope this works for you, good luck, steve



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A man has got to know his limitations


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