1996 Lincoln Mark VIII Questions

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car is overheating and running like crap

My anti theft system is engaged and now I cant turn key foward

Now it wont start It did right before now it turns over but no spark, have fuel any ideas would be appreciated

The car will start right up after its been sitting for a couple of hours but if i start it an cut it off it wont start right back up until the car has sat for a couple of hours

For the time being I have installed a quick disconnect for the battery, this is how I turn the car off.

Okay when the key is turned off, the engine stops as it should, but everything electric, dash instrumentation, radio, air conditioner, lights, air ride suspension, bells/buzzers/dingers (lol), everything else remains on and will kill the battery in about an hour or so. Also, I cannot turn the lights off at all (head lamps/tail lights) even by manually switching them off. The key does not stick in any way, it freely moves through selections and slides in and out like normal, the steering column does not fetch, the transmission seems to be functioning 100% normal (as you can see I have been through this), and all my instruments, radio, climate control, Hi/Lo beams, washers, brake lights, etc., are all functioning fine. I have checked a multitude of wiring harnesses and cleaned/dielectric greased them. Tested all my fuses. Suspected the relays but then again it seems the only related ones are the Parking Lamps and H/L Beam Relays and these function correctly, as does the horn, ABS, and Fuel Pump...

That leaves me supposing the most simple explanation of some form of bad or loose ground, the fact that it is NOT intermittent though nor is there any "running" power loss, steers me another direction altogether. I just don't know.

Any ideas, especially from someone with electrical troubleshooting experience with this vehicle, would be greatly appreciated. (Also I believe the electrical systems of the 1993 thru 1996 were identical but changed in 1997 as I have read elsewhere)

repaired evap system, clear codes 443 443 pending. Ck eng lite off as long as i drive car. After stopping & re starting lite comes on. Clear code again & re try ok as long as car is driven as much as 125 miles, stop for gas re start light back on. Very frustrating. Larry

does the speed control deactivation switch have anything to do with the transmission fluid leaking?