Painless Brings Luxury Features To Your Classic - The new PCM (Painless Convenience Module) adds such modern features as headlight delay, dome light dimmer, radio delay which powers the radio until the key is removed or the doors are opened. A headlight-on warning alarm and a turn signal 150-second alarm are also included. Compact state-of-the-art electronic module is easy to install with straight forward instructions. PCM Part # 63040