Hey to you all....well my uncle is ready for "us" to install "our" Langdon's mini HEI which I purchased two years ago but have not had the time to install with all the other stuff to do. "We" need to get rid of the firewall ceramic voltage reducer and use a 10ga. wire from the Ign. switch to the dizzy. Can "we" use standard stranded copper wire? Do we need to buy a different Ing. switch as we have the original which works and the system was switched to a 12V by the PO???? Also.. my 81 year old uncle says to use a vacuum gauge to set the dizzy and reduce that number by two pounds then hop in with a wrench and drive the truck up and down some hills and when it pings stop the truck loosen the dizzy and turn it CCW just a bit then do it all over again....has he lost his mind or is he pulling just my leg???? Why did man invent the timing light??????HELP....T/C Steve