Question... Im in the beginning stages of beginning of wiring a chevy small block with a painless harness. I had no plans of wiring this speed marker box into the new harness. I assumed the process of the cable to the gauge to run the speedometer was mainly mechanical in nature. Im assuming the gauge will still function correctly if there is no juice to the box, but if Im wrong, someone let me know.
I have also seen replacement cables that run straight from the trans to the gauge, bypassing the box. Do these cables ever really wear out?