2004 Tundra Superlift Truspeed Install
After spending countless hours trying to install a Truspeed unit on my '04 Tundra AC, I've realized that the installation instructions that came with the unit are incorrect for this make/model/year.
The instructions say to cut into the Yellow/Red wire at the side of the transmission, and tap the Truspeed into this. When I cut the wire, to my surprise the speedometer still works! This is obviously not the speedo wire. So after some trial and error (i.e. cutting random wires) I was able to locate the speedo wire behind the instrument cluster. Note that the instrument cluster is different on 05 and newer models. The wire you're looking for is Green with Black stripe, the second wire on the brown plug (13P). I hope this helps anyone else who may be having trouble finding the speed sensor wire on this truck. Good Luck!!!
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