Ford Ranger Parking Brake Indicator Bulb Size

Additional Notes

• The Ford Ranger parking brake indicator uses the 194 bulb across all listed model years from 1983 to 2003.
• The 194 is classified as a miniature wedge bulb, designated T10 in the international bulb sizing system.
• T10 refers to the bulb's tubular shape, with the number indicating its width in eighths of an inch, making it a compact form factor suited to instrument cluster and indicator applications.
• The 194 operates at 12 volts with a power draw of 3.78 watts, consistent with low-current indicator lighting rather than high-output illumination.
• The 194 follows ANSI standards recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical specifications shared across those markets.
• The wedge base design of the 194 means the bulb is held in its socket by the tension of the base itself, with no separate metal cap or bayonet pins involved in retention.
• Because the 194 is an ANSI-standardized type, it is produced by multiple manufacturers, and units from different sources are generally interchangeable provided they match the 12V and 3.78W ratings.
• The consistent use of a single bulb type across the listed production span of the Ford Ranger reflects the stable electrical architecture of the instrument cluster over that period.