Hi all - a few questions,

I have these two control setups & I'm not sure what the differences are or which is for which year - can someone help identify these.



One of them is going into my 71 Satellite project, not sure if one has any advantage over the other. This is all part of reconditioning the heater box assembly.

Also, could I bench test the controller attached to the heater box if i connected a vacuum pump to it and what amount of vacuum would I want to pull to come close to engine idle?

One last question - is there a color coded vacuum diagram available for these boxes - I have the 71 factory manual but there black & white - sure would be nice to have color.

Thanks!

Before.....



Almost after..