The coolant gauge fluxuates from normal to hot while driving to

After I replaced the front rt park light because it was out, i replace light then i have the dash indicater light came on like it was out or going out, so i take the encasement out and it comes on again. I put it back in it stays on until i use my brights or turn signal. Note, the daylight running lights did work and fog light used to work too. It didnt work next time and i lifted the bundle of wires from the light and it clicked on again. I looked for a bare wire from the exposed bundle so i taped it hoping that would keep it on but it did not. Could this be a interior light switch replacement issue or a wiring issue?

Fuel gage not showing amount of gas in tank

Engine idles rough cuts off wheel driving or won’t start at random times Needs jumped will do it while riding all dash lights come on than everything off even headlights before it dies than doesn’t have any power when it goes at first and other times it’s fine any ideas new barrier and alternator 2 times

Probable ECM failure
OBD Codes; P2112, P2104, P0403, P0443, P0053, P0054, P0059, P0060.
Some sensors will need replacing, Some Wiring needs repair.

After replacing the lock cylinder and having a brand new key made and programmed everything comes on it's working right now it laying all that stuff but it won't start now and it was sitting for maybe a month and a half now there's a shot that looks like a relay on the fender like most Fords an old big one and I took a couple of wires off of that that didn't look like they were attached too much of anything I can't remember being on anything and maybe the problem but I'd like to hear from some new people out there maybe you got a better idea on what maybe is happening here thank you for your time if you will get a chance to drop me a line thank you bye