Why does 1994 paseo have a rough idle and lights noticeably brighten on acceleration?

A rough idle and lights brightening during acceleration in a 1994 Paseo could indicate a few issues. Common causes include a failing alternator that struggles to maintain voltage at idle, causing the lights to dim and then brighten as the engine accelerates. Additionally, a vacuum leak or issues with fuel delivery could lead to an unstable idle. It's advisable to check the electrical system and perform a diagnostic to pinpoint the exact cause.