This is a NOS 30 amp. rated 12 Volt Power Relay Module used to trigger your solenoids or power your electric fuel pump, radiator fan, etc.   Use with your existing wiring harness or install directly with the included spade terminals and color coded NOS instructions.  

Slightly used; nice shape------------guaranteed 100% functional.    Fixed shipping of $3.00.   See my other auctions for a wide variety of nitrous and hot rod items-------------you may also call the shop at 702-596-2616 with questions.