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Meter and Gauge Replacement


Sierra

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I am trying to replace my old meter and gauge cluster and I came to find out that the new one has some extra wires and a relay that mind does not have. Anyone know where those extra wires connect to?

 

My old cluster is the one on top.

 

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My '76 has a speedometer switch that closed above 10 MPH and holds the BCDD on the carb open very slightly. I think this was to reduce emissions on deceleration or that backfire sound in the exhaust. When slowing down, foot off the gas, I noticed that when you pass 10 MPH the engine would suddenly drop off in RPMs. This was the BCDD being turned off.  Found out much later (from Doug I think) about this feature and remembered how my B210 was.

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