---
kind: "section"
citation: "49 C.F.R. § 393.23"
title: "49"
number: "393.23"
heading: "Power supply for lamps."
url: "https://uscodex.org/cfr/49/393.23"
---

# §393.23. Power supply for lamps.


All required lamps must be powered by the electrical system of the motor vehicle with the exception of battery powered lamps used on projecting loads.


## Notes

### Amendments

[70 FR 48046, Aug. 15, 2005]

### Authority

Authority: 49 U.S.C. 31136, 31151, 31502; sec. 1041(b), Pub. L. 102-240, 105 Stat. 1914, 1993; secs. 5301 and 5524, Pub. L. 114-94, 129 Stat. 1312, 1543, 1560; and 49 CFR 1.87.

### Source

Source: 33 FR 19735, Dec. 25, 1968, unless otherwise noted.

### Amendments

[70 FR 48046, Aug. 15, 2005]