So when I bought the car they seemed to work just fine. Low coolant light/sound, doors open ect. However now they don't seem to work, randomly out of the blue.

I have checked all fuses and have not changed or messed with any wiring.

Something weird I noticed was if I didn't drive the car for a few days, the clock would work and be bright, but slowly start to fade.

Any ideas/suggestions?

 

suggestion?
yep.. https://www.rx7club.com/new-member-r...swers-1030345/

then recheck the fuses.Check and clean all battery and associated power connections.

 

86 fc rx7

13b Stock motor, emissions delete, ac delete. New plugs, wires, battery. Grounds are all clean. Aftermarket radio.

 

Just to be clear, Iit's not the dash lights (speedo/rpm ect). Its the "dummy lights" in the middle of the dashboard.

 

Could be just a loose connection (that item you speak of is prone to cold solder joints and act like it has a mind of its own).

 

check fuses, usually the dash lights are linked with another series of lights aswell

 

yeh just pull out the dummy cluster and check the wiring. a lot of the time the pigtail becomes loose. mine did, fixed all my lights but alas it did nothing for my clock going on and off lol