Have a question on wiring. I have installed a complete Ron Frances Harness in my 65 mustang. I am now ready to check to see if every thing works. On the instructions it said to make sure the ignition switch and all accessories are off . It said to connect to the battery positive cable only , Do not connect the negative cable. Then it said to take your test light and connect it to the negative post on the battery and the other end to the body ... If the light comes on you have a direct short somewhere, well guess what mine comes on. Now the question is what or how do I find the short ? Any ideas thanks for the help everyone.