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1984 Auto Wiring Question

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Old Dec 27, 2025 | 04:51 AM
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Default 1984 Auto Wiring Question

Hello All, I want to hook up a GPS speedometer sensor, what would be the easiest way to hook it up? Could I hook it to one of these wires on the VSS connector? Or would it be easier to connect to one in the dash. Any advice helps!
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Old Dec 27, 2025 | 04:04 PM
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You want the sender under the dash pad with a clear view through the windshield. Mine works fine. But i have aftermarket speedo as well. Just remember it wont work in tunnels if you have any near you.
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Old Dec 27, 2025 | 04:53 PM
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You can NOT drive your OE speedo using a GPS sender. What after-market are you intending to use or are your intentions just to use a different device for a speedo check maybe?
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Old Dec 27, 2025 | 05:55 PM
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Originally Posted by WVZR-1
You can NOT drive your OE speedo using a GPS sender. What after-market are you intending to use or are your intentions just to use a different device for a speedo check maybe?
Basically Im wondering if the oem vss is the only way to get my oem cluster to show mph, mine does not work and I have sent the cluster away and was told my vss was most likely the culprit, im trying to avoid buying/installing a new one that could fail again and would like to buy a gps sender that has a wire that goes into the computer but not sure how I could do it.
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Old Dec 27, 2025 | 06:56 PM
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Originally Posted by CrossfireInfection
Basically Im wondering if the oem vss is the only way to get my oem cluster to show mph, mine does not work and I have sent the cluster away and was told my vss was most likely the culprit, im trying to avoid buying/installing a new one that could fail again and would like to buy a gps sender that has a wire that goes into the computer but not sure how I could do it.
It is the only inexpensive option for the OE cluster function.

It seems the connector is good, but it deserves confirmation. There's other possible but unlikely circumstances but it's going to require removal of the VSS to check/confirm. Check the VSS in the car for some confirmations. I would imagine yours should be marked 40-45 somewhere on the VSS. You can check the VSS using a rotary device and checking for AC voltage. Does odometer work?

There does seem to be a conversion that probably could work but I'd try for a used from the CF WTB/FS marketplace if it's actually a VSS issue. Most would have done the required checks before sending the cluster out. Who did you send it to?

*** I didn't see your other similar thread.

Last edited by WVZR-1; Dec 27, 2025 at 08:45 PM.
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Old Dec 27, 2025 | 08:21 PM
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Did you check if it is a wiring problem, the sensor, or the gears driving the sensor as I suggested as possible faults in your other topic?
Fixing the actual fault is probably the easiest way to get speed on the cluster.

https://www.corvetteforum.com/forums...post1609310744
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Old Dec 27, 2025 | 09:43 PM
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Originally Posted by WVZR-1
It is the only inexpensive option for the OE cluster function.

It seems the connector is good, but it deserves confirmation. There's other possible but unlikely circumstances but it's going to require removal of the VSS to check/confirm. Check the VSS in the car for some confirmations. I would imagine yours should be marked 40-45 somewhere on the VSS. You can check the VSS using a rotary device and checking for AC voltage. Does odometer work?

There does seem to be a conversion that probably could work but I'd try for a used from the CF WTB/FS marketplace if it's actually a VSS issue. Most would have done the required checks before sending the cluster out. Who did you send it to?

*** I didn't see your other similar thread.
odometer doesn't work, the numbers spin freely so I assume its physically broken. I think im going to try to tackle the situation as you described since wiring a aftermarket solution wouldn't work.
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Old Dec 27, 2025 | 09:45 PM
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Originally Posted by JoBy
Did you check if it is a wiring problem, the sensor, or the gears driving the sensor as I suggested as possible faults in your other topic?
Fixing the actual fault is probably the easiest way to get speed on the cluster.

https://www.corvetteforum.com/forums...post1609310744
wiring looks good, I haven't removed the sensor to test but I think thats my next step in all of this
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