ive been using the pivot super shift lamp for over 2 yrs now. no problems what so ever. you can connect it to the taco itself or simply plug it in the cig socket. i went with the cig socket and it seems pretty accurate to me. plug it in, set it to the revs you want etc etc. it saves it in its little computer thing and your set. i mean over 2 yrs, no drama, works well... i guess it speaks for it self.