Can someone please tell me what connector to "wiggle" to get the tachometer working full time.
Sometimes when I start, the tach sits at zero, but the truck runs fine. Then while driving the tach starts working.
I'm thinking that a connection is not connecting properly. Not showing any codes with the ignition or OBDII reader.
I don't have any idea where the connection might be bad and I don't want to "wiggle" every connection under the hood.
I have electrical spray cleaner and lube for what ever connector it might be.