Nissan Repair: Dash lights, park lights, fan and stereo, fuse box, aftermarket radio

Question
Hi I have a 90 pathfinder with flashing dash lights, park lights and indicators. The stereo and fan are also coming on and off. I am getting a clicking noise from the little blue relay above the fuse box. I also think that when I rev the problem everything comes back on. Is this an alternator problem or do I replace the relay?

Answer
Luke,

EIther the dimmer for the instrument lights is going out or the master headlight switch is going bad.  I would replace the dimmer before I would replace the headlight switch due to costs.  But, you can bridge the dimmer switch and see if the instrument lights work.  If they do replace the switch and if they do not it is going to be the master headlight switch.  Now, if you have an aftermarket radio that has been wired incorrectly that could be a problem too...