Convert Speedo to Electric?
Today | 04:12 AM
#1
Thread Starter
CF Veteran
Joined: Apr 2016
Posts: 1,746
Likes: 35
From: Pasquotank, NC
Year: 1990
Model: Cherokee
Engine: 4.0
Convert Speedo to Electric?
I have a 1990 XJ. It has a speedo cable. The cable started chattering. Has anyone converted one of these to a VSS with later speedo? I don't want to go aftermarket. Hoping I can swap to a later speedo with sensor and associated wiring. Has this been done? Figure it's possible?
Today | 03:20 PM
#4
Senior Member
Joined: Oct 2020
Posts: 903
Likes: 278
From: PA
Year: 1994
Model: Cherokee (XJ)
Engine: 4.0
The ECM provides 8V of power to the VSS on the HO models and the output feeds both the TCM and the gauge. How the gauge will react with 12V-14V input, you'll have to test... You could certainly install a buck step-down converter to get 8V, and then it should work fine.
The fuel gauge will read backwards, empty when it's full, but that can be fixed by changing the sensor in the tank. Don't know about the coolant temp and oil pressure senders, but those are easy enough to replace...
The fuel gauge will read backwards, empty when it's full, but that can be fixed by changing the sensor in the tank. Don't know about the coolant temp and oil pressure senders, but those are easy enough to replace...
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