Rule 104. Preliminary questions of admissibility.
(a) Questions of admissibility generally. Preliminary questions concerning the qualification of a person to be a witness, the existence of a privilege, or the admissibility of evidence shall be determined by the court. In making its determination it is not bound by the rules of evidence except those with respect to privileges.
(b) Admissibility subject to a condition. Except as otherwise provided by law, when the admissibility of evidence depends upon proof of other connecting facts, the court may admit such evidence subject to the condition that further evidence be introduced sufficient to support a finding of those connecting facts. The order of proof may be regulated by the sound discretion of the court.
(c) Hearing of jury. Hearings on the admissibility of confessions shall in all cases be conducted out of the hearing of the jury. Hearings on other preliminary matters shall be so conducted when the interests of justice require or, when an accused is a witness and so requests.
(d) Testimony by accused. The accused does not, by testifying upon a preliminary matter, become subject to cross-examination as to other issues in the case.
(e) Weight and credibility. This rule does not limit the right of a party to introduce before the jury evidence relevant to weight or credibility.