Historical textIn force on Oct. 1, 1997Source: annual CFR editions 1996–2004

§ 393.32 Detachable electrical connections.

Wording first on file in the 1996 annual edition, superseded by the 2005 annual edition. The section was then removed.

govinfo, 1996 edition ↗

Before Jan. 1, 2017 the record is one snapshot per annual CFR edition, revised as of October 1. This is the 1996 edition's wording. An amendment that took effect between Oct. 1, 1997 and Oct. 1, 1997 would not appear until the next edition, so check the citations below and the Federal Register for exact effective dates. govinfo does not publish the 1997 edition of Parts 300–399 in machine-readable form, so the 1996 text is shown for that year.

49 CFR § 393.32 — Detachable electrical connections.. Text in force on October 1, 1997. This wording effective October 1, 1996 to October 1, 2005. Source: govinfo, 1996 edition, https://www.govinfo.gov/app/details/CFR-1996-title49-vol4/CFR-1996-title49-vol4-sec393-32. Retrieved from FMCSR.com, https://fmcsr.com/reg/393.32?asof=1997-10-01, on October 26, 2026. Unofficial compilation; verify against the official source.

Electrical wiring between towing and towed vehicles shall be contained in a cable or cables or entirely within another substantially constructed protective device. All such electrical wiring shall be mechanically and electrically adequate and free of short or open circuits. Suitable provision shall be made in every such detachable connection to afford reasonable assurance against connection in an incorrect manner or accidental disconnection. Detachable connections made by twisting together wires from the towed and towing units are prohibited. Precaution shall be taken to provide sufficient slack in the connecting wire or cable to accommodate without damage all normal motions of the parts to which they are attached.

Amendment history

1 distinct wording on file since Oct. 1, 1996

Oct. 1, 1996 → Oct. 1, 2005annual editions 1996–2004viewing

A new entry appears whenever the regulatory words change between government snapshots. Day-precise from the eCFR (2017 onward); before that, one snapshot per annual CFR edition (revised as of October 1). Bracketed citations are the Federal Register history printed with the section.