Speedometer/tachometer and other DLC info issues

[Jason]

Hey all,
I bought a new infiniti so I havent been driving my aurora and have it listed for sale - I took a fuse out and forgot to put it back it (heater solenoid I believe) on a quick trip around the neighborhood. Since then I've had issues with my speedometer and tachometer randomly stop working then they works again. It also affected my fuel range, avg mpg, avg speed and fuel used, on the DIC they turned into just 3 or 4 dashes but have since worked correctly.
Any idea what this might be, could it be related to not putting the fuse back in before driving on accident?

[tigger]

I had a similar issue with gauges/DIC a while back. After just putting up with it for several weeks, I started having stall and no crank issues which eventually led me to the ignition switch. Replaced the switch; no more stall/no crank AND the gauges and DIC have worked perfectly ever since!

Just throwing it out there...

GL

[Jason]

Thanks for the input tigger, you're always there for help! Now that I've finally decided to sell my aurora its seemed to have manifested some issues all of the sudden.
The DIC hasn't replicated the issue since the first time, and the speedometer/tachometer have done it a few times - when they are affected I've noticed now that my turn signals and CEL (secondary air) dont work. The problem doesnt go away by turning the car off and on again but it does seem to go away after being off for about 15 minutes and doesn't always return as soon as expected.
Also when using my heater it makes this awful hissing noise at any level above 2 or 3. Also overheating and I'm getting low coolant warnings again which I've already replaced the crossover pipe, radiator, and hoses. I'm actually going out to check on the coolant right after I finish typing this, but as for the rest of the recent issues I dont even know where to start.

Oh and the trunk just started leaking within the past month also

[Jason]

Who knows I may part the car out if I could get over $1000 lined up. Theres well over a few thousand in brand new parts