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All documentation

Signing in

Signing in unlocks favorites, your cart, and (with Premium) the parts inventory and build tools. Just an email and password.

Sign in

Email + password; a clear error if they don’t match.

The sign-in page — email, password, Sign in button, and a create-account link
  1. 1Email — The email you registered with.
  2. 2Password — A wrong email/password shows a clear inline error rather than guessing which was wrong.
  3. 3Sign in — Signs you in and drops you back on the home page; your session sticks across visits.
  4. 4No account yet? — “Create an account” jumps to registration.