In order to ask a question you will need to register; this is really quick and only requires your email address, and for you to create user name and password.
Once you have registered you can log in to the forum with the user name and password that you set up during registration.
Next click on the wiring section that you wish to inquire about.
Click the new topic button on the right hand side, this will bring up a page in which you can post your question.