Speedometer reads wrong even with LS pcm

[Wagonbacker9]

is your neutral safety switch hooked up? if not that's why your shift indicator light doesn't work.

And to where does it get hooked up?

[RPM Graphics]

that' i'm not sure of. i'm using a trans from an 02 Camaro & i'm not running a NSS since they're on the shifter in the Camaro & not on the side of the trans.
eventually i'll switch out the linkage shaft & put a NSS back on it. for now i'm not worried about it. i need A/C, control arms, & door handles first.