Needing the some help with grounding. I know pin 19 should be the sensor grounds. What pins should be grounded where. I also have an autosport harness. Do the grounds that are tied together get bolted to the chassis. Also to what and where are they to be grounded?

Pins

7 ___
8 ___|
9 ___|__ Tied together then to chassis??
10___|
11___|

19___ Sensor Grounds

What about these pins?

1
2
12
13
14
15
16
17
18

 

Pins that are tied together should be grounded to the engine, not the chassis.

The rest of the pins on top are either spare pins, or grounds. Basically any pin higher than pin 7 can be grounded. A couple lower than 7 could be too, but I'd have to test which of those are spare pins as I don't remember off the top of my head.

I also would not tie together pins 7-11... I'd run individual ground wires from there to a single ring-terminal that is bolted to the engine.