Toyota Land Cruiser Parking Brake Indicator Bulb Size

Additional Notes

• The Toyota Land Cruiser uses the 158 bulb size for the parking brake indicator across the 1979-1985 model years.
• The 158 is an ANSI-standardized bulb, meaning its specifications are governed by a recognized North American industry standard applicable in both the United States and Canada.
• The 158 bulb follows the T10 miniature wedge form factor, a base type that relies on two angled plastic legs to secure the bulb directly into a socket without a separate metal base or bayonet pins.
• The 158 operates at 12 volts and draws 3 watts, placing it among the lower-output bulbs used in instrument panel indicator applications where minimal brightness is sufficient.
• The wedge base design of the 158 means fitment depends on socket compatibility with the T10 wedge format, and substituting a bulb with a different base type would not be physically interchangeable even if voltage and wattage ratings were similar.