My indicators work when I use them as hazards but don’t as individual indicators also my speedometer lights work but go very dim/almost out when I put on high beam
The dash lights come off the feed from the battery via the fuse box and the ignition switch run contact. The hazard power comes unswitched and unfused straight from the battery via a big red wire, everything else you mention is switched by the ignition switch then coming through the big black 2.5mm2 wire then going through the fuses in the fuse box. I would check all the fuses in the fuse box are clean and not part melted which makes them lose contact causing voltage drop . Also that the ignition switch is properly plugged in under the dash. There are spade connectors in a plastic shell. And then check that the ignition switch itself doesnt have a burnt set of contacts - this may also show as engine that starts but wont run or turns over but wont start depending on how low the voltage goes on the switched black wire which is going to the fuse box and then back to the coil to run the ignition. Basically with the ignition switch in run position you should see almost exactly the same voltage on the big red and black wires on the fuse box. And they should be maybe only a bit less than the battery voltage at the back... if you are seeing a volt drop things are getting bad.
