Just now getting into the Honda 750's. Purchasing a pristine 1976 from original owner with 2,673 miles. Bike came from the dealer with pull back handlebars I want to replace with original style. I have owned Kaw Z1's for years, bars simple to change as control harnesses are strapped externally. Question is how difficult to remove harnesses from internal routing and will connectors feed through? Want to be extremely careful with this bike. Appreciate any info/advice.