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The box I used was called the SGI-100BT. It allows you to adjust the signal of the GM tachometer and spits out a signal that the Toyota tach can read. I haven’t messed with the speedometer functions of it because I’m just using the mechanical speedometer cable that was on the truck originally.Hi mate, what “dakota box” exactly did you use for the tach, and how does the conversion to digital work?
The stock tach on my truck only goes up to 4K rpm, so a little down the road I think I’m going to have a gauge restoration shop reprint the tach and adjust it so it reads higher.
There are aftermarket gauges like the speed hut gauges, and they can print whatever you want on those too. They use EL lighting though and aren’t front lit like the stock ones for illumination and aren’t as bright as my stock gauges with white LEDs installlrd.
The nice thing about the aftermarket speedometers is that there’s kind of a lot to choose from depending on what you use. You can use the VSS signal from your engine harness, GPS satellite signal, or OBD2 CAN signal. This is about the furthest I’ve gone into reading up on it since i just kept my mechanical cable, but if you were to use the VSS or OBD signal electric speedometers you could adjust your Speedo to read accurate with oversized tires in HPTuners, the GPS one I think would just read accurate all the time