§FMCSR.com
Current textIn force on June 22, 2023Source: eCFR

§ 393.28 Wiring systems.

Current wording, in the annual edition revised as of Oct. 1, 2005.

eCFR as of June 22, 2023 ↗
49 CFR § 393.28 — Wiring systems.. Text in force on June 22, 2023. This wording effective October 1, 2005 to present. Source: eCFR as of June 22, 2023, https://www.ecfr.gov/on/2023-06-22/title-49/section-393.28. Retrieved from FMCSR.com, https://fmcsr.com/reg/393.28?asof=2023-06-22, on October 26, 2026. Unofficial compilation; verify against the official source.

Electrical wiring shall be installed and maintained to conform to SAE J1292—Automobile, Truck, Truck-Tractor, Trailer, and Motor Coach Wiring, October 1981, except the jumper cable plug and receptacle need not conform to SAE J560. The reference to SAE J1292 shall not be construed to require circuit protection on trailers. (See § 393.7(b) for information on the incorporation by reference and availability of this document.)

[70 FR 48047, Aug. 15, 2005]

Amendment history

2 distinct wordings on file since Oct. 1, 1996
  1. Oct. 1, 2005 → presentannual editions 2005–2016diff vs. previousviewing
    [70 FR 48047, Aug. 15, 2005]
  2. Oct. 1, 1996 → Oct. 1, 2005annual editions 1996–2004
    [53 FR 49397, Dec. 7, 1988]

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.