Where would you put a reed switch???
Also, what year, make, model car is this. I have access to alldata and the half dozen or so non-cable driven speedo toyotas I've looked at all use 3 wire hall switch VSSs sensing a toothed wheel inside the transmission.
In other news, my cable driven speedo has a reed switch that grounds a 12v line from the ECU. IE 12v square wave.
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-2003 Subaru Baja 2.5 5MT
-2005 Subaru Baja 2.5T 5MT
-1994 Pontiac Firebird 5.7 V8/6MT
-2001 BMW R1200c
-1970 VW Beetle
-2015 Prius (for the wife)
"You don't get to blame me for how I fix what you broke."
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