Thread: Electric SpeedO

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What is involved in replacing the original speedo in my 48 DeSoto, with an electrical speedo?
I just talking about the mechanicals, not the fab or custom work.
Jackie

There have been a couple of threads just talking about this.

The first thing you need is to pick up your electronic speedo. Try to find out what type of signal pulse it requires.

You also need to find out if it needs a 2 wire or 3 wire sensor. More recent speedo's need the 2 wire one, but check to make sure.

Once you have this information, you need to change out your cable out of the transmission with a Vehicle Speed Sensor or VSS for short. They likely have one at the place where you are getting your speedo, but if not check out painless performance and do a search for Vehicle Speed Sensor. They have 3 to pick from and very good customer service - but many places stock them.

Then it's just a matter of running the wire between the speedo and the tranny and calibrating the speedo. It's not difficult and resolves some of the "Bouncing needle" situations that many experience with cable drives.
Jerome

Sorry to hijack but I had a question like this a while ago and I'm still not sure.

I have Stewart Warner Guages and I have the sensor mounted on my tranny. It has three wires-red, black, white. Any ideas how to hook this up?? The gauge already has power to the signal and light then the signal wire runs down to the sensor.

I was told signal to white, ground black, and more power to red???

My sensor also came with the gauges.


Thanks

I've used them on several occasions and the most difficult part of the job is calibrating it once it's installed. All you have to do is order the sender to fit your trans. for the speedo you buy.

Originally Posted by sgo70

Sorry to hijack but I had a question like this a while ago and I'm still not sure.

I have Stewart Warner Guages and I have the sensor mounted on my tranny. It has three wires-red, black, white. Any ideas how to hook this up?? The gauge already has power to the signal and light then the signal wire runs down to the sensor.

I was told signal to white, ground black, and more power to red???

My sensor also came with the gauges.


Thanks

That is correct. Red to a switched hot , white toe the speedo and black you can ground at the tranny so you dont have to run it far

Thank, seems doable.
How does a GPS work, and all you have to do is plug it into your lighter/power socket, but shows real time speed?
Jack

Originally Posted by iceburgh

That is correct. Red to a switched hot , white toe the speedo and black you can ground at the tranny so you dont have to run it far

http://www.sw-performance.com/upload...ionsWiring.pdf

Here ya go......

While not on topic... A GPS uses at least 3 satellites to triangulate the signal to your GPS. The GPS unit in your car picks up the signal from the satellites to determine your location from the previous location. It then calculates the amount of time that has passed from the distance you have traveled and converts that into MPH.

WOW!! What next?
Jackie

Well, since you asked.... A friend of mine is working on an invention that he has patented. It's called DRIVE BY WIRE. Where it uses the GPS signal it gets and shoots a lazer light on your windshield that perfectly aligns with the road you see. So rather than just following the map directions on your GPS... you need to keep looking at your windshield and "follow the red line". It's getting marketed to various car companies right now.