Will these work in my vehicle without modification?

These are universal 7507 bulbs with off-set pins. Check your owner's manual or existing bulb specification to confirm your sockets accept PY21W. Most vehicles do, but fitment varies.

Can I touch the bulb with bare hands when installing?

Avoid direct contact with the glass envelope. Oils from skin can cause premature failure. Use a clean cloth or gloves during installation and removal.

Is the chrome finish permanent or will it fade?

The stealth chrome coating is baked into the bulb during manufacturing. It won't peel or fade under normal use, but the bulb will eventually burn out like any halogen bulb — typically 500–1000 hours depending on use.