Just means the car is getting power when ignition (key on, engine off) is one but when power is applied that changes.
Yes, the ecu is getting power if light is indicated but doesn't mean anything.
Car run since cap, rotor, other things added?
Seems like you have tools (testing the coil)
Grounds are attached to most anything that gives/receives power. They are always a black wire (on factory wiring) and will only be applied to a ground which is anything metal (frame, firewall, ect) and never applied to anything that emits power (positive battery terminal, anything that has power applied to it)
---------- Post added at 08:28 PM ---------- Previous post was at 08:25 PM ----------
Clarity on grounds on parts, like a coil pack has power ( or neutral wire or intermittent power) and with that you need it grounded so it will have a black wire (most likely a small gauge wire and a circle end terminal)
---------- Post added at 08:29 PM ---------- Previous post was at 08:28 PM ----------
Clarity on grounds on parts, like a coil pack has power ( or neutral wire or intermittent power) and with that you need it grounded so it will have a black wire (most likely a small gauge wire and a circle end terminal)