It is die cast and nicely chrome plated 3 pin flasher, 7 wire design and includes a wiring diagram on box It simply clamps onto the steering column with no drilling or cutting necessary This switch is the perfect solution for putting a turn signal on an early street rod project Manufacturer Part Number:universal turn signal switch with flasher;Interchange Part Number:HL101 Product Description Turn Signal Switch with Flasher - Universal Fit 12V OEM Ref. # HL101 This switch is the perfect solution for putting a turn signal on an early street rod project It simply clamps onto the steering column with no drilling or cutting necessary It is die cast and nicely chrome plated. It is a 7 wire design and includes a wiring diagram These are a universal fit for many early Street Rods For the wiring diagram, plz check the photo of the list, there have 2 photo of diagram Please keep the box, there have instruction at back side of box Item Universal Turn Signal Switch with Flasher Material Plastic + Electronic Components, Chrome Plated Placement on Vehicle Left, Front Current 20 Amp Package Include 1x Turn Signal Switch 1x Flasher 1x Mounting Clamp