coolioni Posted December 15, 2009 Report Share Posted December 15, 2009 I have an 83 720 truck. . The instument cluster was a wreck, so I picked up a real nice one off of an 85. I noticed that there are 2 plugs coming put of th bottom of the cluster that are not on my 83' . What are these for ? I notice there is an indicotor light that reads "sensor" . That was not on the 83. Could those plugs have something to do with the sensor light ? Will the instrument cluster still work properly without the 2 plugs not being plgged into anything ? I was ttold that it was compatable, but I was not expecting these 2 plugs to be attached to the cluster. Someone had mentioned to me something about a throttle body sensor. Is this what the plugs are for possibly ? Quote Link to comment
izzo Posted December 15, 2009 Report Share Posted December 15, 2009 86 models should have the throttle body, not 85. as it was the the last of the 720s in 86.5 that got the throttle bodies. not sure what the plugs are for, does both have tachs, clock? Quote Link to comment
coolioni Posted December 15, 2009 Author Report Share Posted December 15, 2009 neither have clocks but they do have tachs. What exactly are throtte bodies anyways ? Quote Link to comment
zrex Posted December 20, 2009 Report Share Posted December 20, 2009 I think the two wires go to the o2 sencer, according to the fsm every 50k the warning lamp activates. Rex Quote Link to comment
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