Cal. Evidence Code § 787 : California Evidence Code — Witnesses — Credibility Of Witnesses — Attacking Or Supporting Credibility — Specific instances of conduct Date: 31 Aug 2016 TEXT PDF Current through the 2016 Legislative Session Subject to Section 788, evidence of specific instances of his conduct relevant only as tending to prove a trait of his character is inadmissible to attack or support the credibility of a witness. Ca. Evid. Code § 787