MAP sensor enhancer HELP

[hho nut]

I have a diagram and a schematic of a dual MAP sensor enhancer.
The schematic shows the brown wire from map sensor going out to 2 pots and a switch.
The diagram only shows the brown wire going to the pots.
Which would be correct?

Here they are page 3.

http://hhoencyclopaedia.net/hho/diag...0schematic.pdf

Thanks

[JonDoh]

pix of the diagram & schematic would help.........

[scrode]

yup the same schematic I used to build mine. brown to pots. gray to switch

[hho nut]

Thanks for the help.