Mike Campbell is ready to shed some light on his complicated friendship with the late Tom Petty. As a founding member of Tom Petty and the Heartbreakers, Campbell had a front-row

From the couch, the guitarist stood and said hi. He was tall, with a handsome, boyish Irish face and long brown hair. He said his name was Tom too. Tom Leadon. Leadon pointed to the big red-cheeked guy with a mustache who I recognized as the singer. “That’s Jim.” Jim Lenahan.

In his new memoir, “Heartbreaker,” Mike Campbell recalls an afternoon in the early ’70s when Tom Petty — Campbell’s bandmate in a Gainesville, Fla., cover band called Mudcrutch — played one of his songs.