I lowered my jag today 2000 s-type 4.0 with h&r springs and new shocks. I now have a cats system fault and it looks like the two sensors that plugged into the shocks are not connected but i do not see anywhere to plug them into. Ride is very stiff and front end seems to be sitting high. I know the fault is because of the two plugs not being connected. But could this also be making the front end seem high.

Yes. You have a case of the stiffies...the shocks are in stiff mode when not plugged in. Plug em in brutha.

where do they plug in at?

Did you buy replacement CATS struts? They will have an electrical connector.
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i thought i did. Ill look in the am because its dark now

Im thinking i may be an idiot and not only bought but had the shop install the wrong shocks. Where do i buy shocks that do have the cats system

I don't know but the dealer will probably be able to get them.
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The price is crazy so im just going to stick with what i have, how do i unplug the cats system. where is the location of the control module