Here's the scoup...The aftermarket switches come with the center pin too long...You'll need to file the center pin so when it drops into the rooster comb rev. detent the switch plunger bottoms out and the your rev. lights will come on...I've had to file every aftermarket switch I've installed the past few years to get the rev. lights to work...This really should go in the tech archives seeing how many times a year this new aftermarket switch problem comes up....