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The mkiv Supra Owners Club

Facelift Speedo Wiring


D3xt3r

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Hi

 

Ive got a 96 Facelift TT Manual here that is running one of those combined delimiter/speed converter boxes here. The speedcut is fixed and the speedo now reads in MPH. That is fine. But It currently also counts up in MPH and thats what I want to change.

 

Does anybody have the wiring diagram for the facelift speedo so I can connect the unaltered signal to the mileage meter? Or is there only one connection on there?

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Typically you will have [+ve, -ve, delimit signal and...] an input wire, and 2 output wires from the box. The 2 outputs are the mph signal and the unaltered kph signal - for use with the power steering, (cruise control & active spoiler if fitted).

 

The altered signal will go to the speedo head and the odo; if you can deduce which cable is the unaltered signal you're sorted; a process of elimination should suffice.

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Yeah I know the wiring on the box. I need to know the wiring on the speedo side of things on the facelift cluster.

Isn't it just a case of chaning what has been spliced to where?

i.e. Replace the wire going from the 5/8ths output into the odo, with the 1:1 output?

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As of my current knowledge the speedo has only one input for both the scale and the meter so nothing I can do about it beside changing the numbers manually to miles so the meter is right again.

Oh ok, I hadn't realised there was only 1 input, sorry. :(

(the odo and the speedo aren't co-located on the pre-facelift so its easy to wire up as you desire)

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  • 2 years later...

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