THIEVES caused £5,000 damage when breaking into vehicles at a car sales company.
The intruders' haul included a £1,400 navigation system.
The raid was on PZ Cars in Old Leeds Road, Huddersfield, between 6.30pm on Saturday and 10.15am on Sunday.
The thieves are believed to have fled after triggering an alarm.
The haul also includes a DVD in-car entertainment system, a Kenwood CD player autochanger, a JVC CD player, an Alpine car speaker set and a socket set.
Police want to hear from anyone who saw anything suspicious in the area.
Contact Huddersfield police helpdesk on 01484 436659 or Crimestoppers free and anonymously on 0800 555 111.