tugalo Posted February 21, 2011 Share Posted February 21, 2011 I just scored an instrument cluster from an 87 MJ with full gauges and tach, only problem is, it was a 4 cyl and my truck has a 6 cyl. Anybody know if the tach will work? I took the cluster apart and there is no switch on the tach for 4,6,or 8 cyl. Link to comment Share on other sites More sharing options...
mnkyboy Posted February 21, 2011 Share Posted February 21, 2011 There's no switch its a potentiometer you have to adj. Link to comment Share on other sites More sharing options...
tugalo Posted February 22, 2011 Author Share Posted February 22, 2011 Nope, has no pot or adjustment of any kind..... Link to comment Share on other sites More sharing options...
Eagle Posted February 22, 2011 Share Posted February 22, 2011 Then you have the early style, and the only way to correct for number of cylinders is to change out a resistor. Link to comment Share on other sites More sharing options...
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