Mazda Truck Instrument Cluster Gauges Tachometer

Ok So My Friend And I Just Bought A Mazda B2200 Its A 1991 I Just Gave It A Tune Up And But A Tach In It! But I Dont Know What It Redlines...

My Mazda B2300 Has 200,000 Miles On It, Its A 2.4 Liter Engine. The Problem That I Am Haveing Is, The Tachometer Will Never Go Over 1000rmp...

I Have A 1991 Mazda B2600i 4x4 Truck With Manual Shift. I Would Like To Install A Tachometer. In The Instructions It Says To Hook A Green...