mga sir, ask ko lang po kung pano ko ifix un tachometer nun car ko....i almost overheated last saturday tapos nun pagcheck ko, may leak sa upper hose nun radiator kaya napapatakan un alternator....nun tinanggal ko un hose para ma'fix ko, nabuhusan ng coolant yun alternator .....ngawa ko un overheat problem pero nun pinaandar ko na....my tachometer went berzerk....parang napoposes....pumapalo yun needle pointer from left to right and vice versa...sometimes, ayaw naman magwork...obviously, grounded na cya....san ko po macheck un problem?....pwede kaya DIY ko un wirings? TIA