Most 97 XP's came with 3 gauges (speedometer, VTS, Gas with oil light). There was an option for a 4th to put a tachometer kit in the small 56mm spot as an accessory when new. Mine came with 3 gauges but I got a large 86mm Tachometer from a 98 XP and put it where the VTS gauge was. I put a small VTS gauge in the spot that did not have a gauge. You have to run a wire from Connector 1 pin 2 of the MPEM to the new tachometer. I'll post a before and after picture later tonight.