DennisC
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- Last seen
- Joined
- Sep 5, 2018
- Thunderbird Year
- 2005
I think the clock or the instrument cluster have the fuse on the back of the clock/cluster for one or both of them. If you’re lucky the jumpy speedo is likely due to a dry or possibly damaged speedometer cable. pull it out and examine it for wear and then lube it up and it should settle down.