2001 Jeep Cherokee 4.0 Installed new battery Started great the first time Cleaned connections to relay fuse box and recleaned battery terminals, connections are tight. One click is heard on passenger side under the hood when turning on ignition. Any ideas what i should do next?

Question edited for clarity.
Question moved to model category.

Fuse 30

Jeep Cherokee (XJ; 1997-2001) fuses and relays

Fuse Box Diagrams https://fuse-box.info > jeep > jeep-cherokee-xj-1997-2...

Fuse box diagrams (location and assignment of electrical fuses and relays) Jeep Cherokee (XJ; 1997, 1998, 1999, 2000, 2001).

Jeep Cherokee 1997-2001: Fuse Box Diagram

Jeep Cherokee Forum https://www.cherokeeforum.com > how-tos > jeep-che...

Apr 14, 2017 - The Jeep Cherokee XJ has two fuses boxes. The first one is located under the hood. It is a black box that is located between the battery and the engine coolant ...

Jeep Cherokee 1984-1996: Fuse Box Diagram ' Cherokeeforum
Apr 12, 2017
Jeep Grand Cherokee 1999-2004: Fuse Box Diagram
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Jeep Cherokee (XJ) 1997 - 2001 Fuse & Relay Information

lunghd.com https://www.lunghd.com > Tech_Articles > Electrical
Jeep Cherokee (XJ) 1997 - 2001 Fuse & Relay Information · Power distribution center (Located under the hood.) · Junction / Fuse Block (Located inside kick panel.) ...

Question edited for clarity.
Question moved to model category.

The security alarm and engine immobilizer are functions of the Body Control Module (BCM) and the ECM. You can't just pull fuses. When the battery goes completely flat, or is disconnected, you just need to reset the Security System which is done via the Remote Fob.

https://www.google.com/search?q=jeep+grand+cherokee+security+reset

Jeep Grand Cherokee (WJ; 1999-2005) fuses and relay

Fuse Box Diagrams https://fuse-box.info > jeep > jeep-grand-cherokee-wj-...

Here you will find fuse box diagrams of Jeep Grand Cherokee 1999, 2000, 2001, 2002, 2003, 2004 and 2005, get information about the location of the fuse panels ..

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Here is your fuse box diagram on 2 websites.

Jeep Cherokee (XJ; 1997-2001) fuses and relays

Fuse Box Diagrams https://fuse-box.info > jeep > jeep-cherokee-xj-1997-2...

Fuse Box Location ... It is located behind the lid under the glove compartment. The location of the fuses in the passenger compartment: Jeep Cherokee (1997-2001 ...

'97-'01 Jeep Cherokee XJ Fuse Box Diagram

knigaproavto.ru https://knigaproavto.ru > ... > Jeep > Cherokee

Oct 7, 2019 - Fuse Box Diagram Jeep Cherokee 2.5L AMC 150, 4.0L AMC 242 and 2.5L TurboDiesel (XJ; 1997, 1998, 1999, 2000, 2001)

As I said in your last question, there are very few reasons you need to go near it. A good auto electrician with a professional grade scan tool computer can diagnose the ECM for faults in about 20 to 30 minutes. It is not a job for 'let's try changing this'. If it is bad, a new one needs a tech to install as it has to be programmed with the VIN Number and mileage and set up.
https://www.google.com/search?q=auto+electrician+near+me

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if you had corroded battery terminal look around the battery +ve terminal to see if there is another smaller guage wire that may have corroded through and fallen off. The big cable you cleaned powers the starter , the other wire powers the ignition and may need connecting.

P0123 is a TPS/Pedal Position Sensor A Circuit High Input code. P0162is an 02 Sensor Circuit Malfunctoin (Bank 2 Sensor 3) problem.

Just concentrate for the moment on the battery, starter, and ignition switch. Your 92 jeep is a complicated marvel, but all you need to do is get the starter turning the engine for all those automatic things to happen and turn it back into a mobile jeep.
As long as you have battery power at the switch, and even bigger battery power at the starter, and you connect the three of them together...instant bingo, the engine starts, or should if everything is working right. If I understand you right, you do have power to the switch, just nothing in start, or you 'd have noted that. Check engine light on, and warning lights and gauges work, yes? Then the switch is working that much, anyway. The switch start position should transmit power to the starter on the small wire that is on the starter. You can check for power there when the key is held in crank (start). Easy to check with a meter or a testlight. You stated battery and starter are good, so if the cable connecting them is good and tight., your problem may be in the start circuit from the switch to the starter (starter solenoid, to be exact). So it's ign. switch to starter relay to starter (solenoid).. Check for power on that path. Quick check at starter relay: pull the relay out (in the power distribution box) it connects to 4 terminals.. One terminal should be hot all the time. check with testlight. If nothing there, check the 40 amp fuse or battery connection or wiring. If one is hot, then have someone hold the key in crank. Now 2 terminals should have power. If not then ignition switch or the neutral safety switch or the wiring between them needs diagnosing. If two terminals do have power, try another relay. maybe yours went out. If a good relay doesn't help, then starter solenoid or starter or your wiring needs further troubleshooting. Hope you find it, over...

Look for a power relay in the fuse box under the hood.When you find it change it with another one in the fuse box that has the same part number on it.Make sure not to use the fuel pump relay.

You sound pretty good at this
Go to a local repair shop and have
them print out a wiring diagram
They will have to be successful enough
to subcribe to All Data,Mitchell,etc

clean any connections going to grounds and connections to starter

was the car sitting for a while?The booster may be at fault.Caliper sticking?Fuses have nothing to do with your problem.It is a brake line problem.Could be a few different small problems.Easy to fix though.Hope this helps you