Additional Details ------------------------------ Product description: Electrical Temperature Gauge + Fuel Gauge + Tachometer + Ampere Gauge compatible with Allis Chalmers Tractors 1) Temperature Gauge - 52mm Fitment, Electrical Type, Chrome Bezel, Illumination Bulb + Holder (12V) (OE Ref 70240989) 2) Fuel Gauge - 52mm Fitment, Chrome Bezel, Illumination Bulb + Holder (12V) (OE Ref 240988) Ohmic value 5-37 ohms (Please contact before buy for custom resistance ohmic value to match your fuel sender unit) 3) Tachometer- 85mm Fitment, Chrome Bezel, Illumination Bulb + Holder (12V) 4) Ampere Gauge - 52mm Fitment, Chrome Bezel, Illumination Bulb + Holder (12V) will fit the following AC Tractors which operates on Electrical Temperature Gauge 170, 175,180,185, 190, 190XT, 200, 210, 220 (For Temp + Fuel Gauge - How to connect - please look at the Picture Given with back connection in the listing. ) Any Questions - Please feel free to ask