limequat
+1y
You know, now that you mention it, I may have cut the wire going into the cluster. That would make more sense.
My problem WAS the factory sensor. Mazda uses this crazy M5.5 threaded sensor made out of what appears to be used bubble gum. You can over torque the damn thing with your fingers. And that torque is way less than the torque required to get the thing to seal.
IIRC, I have a GM Sender running through the factory wiring - then to an Autometer gauge. I hate the way the autometer looks, hanging off my cluster, but I won't live without a gauge that actually has numbers on it.
Anyway, I largely digress. You can't leave both the aftermarket and factory gauge hooked up. Their impedences will add, and your readings will be off. Beyond that, I think the Mazda sender has the wrong scaling anyhow.