OEM Toyota – Fits FJ40/45/55 7/1970 – 10/1984 This is an updated Toyota part. It replaces the big, plastic flasher box located underneath the dash. Functions the same, but in a smaller package. – The included nut and bolt are used to ground the black wire to the chassis. – Plugs into the factory wire harness. *Tech Tip – If your turn signals are not working properly, check all fuses, bulbs, and ground connections first. If everything checks out, the problem is likely either the switch, or the flasher.