Cadillac Repair: 87 deville, battery voltage, test procedures

Question
how do you test for battery voltage

Answer
You will need simple electrical schematics, Test procedures and picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture. I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information.