Hello, the code 8 is for the ECM has sent a request and the system did not see that response. You need to look at the two larger wires. They will be closet to you. They are the motor positive and negative. If you have a source and no excessive voltage drops then the individual motor check will need done.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.