Hey bud, With all different circuits being effected as they are , you have a earthing fault. Check your earth between body and - batt and to engine also.
Try looking into the Transmission Range Sensor. I had the problem of my radio cutting out when I went into reverse. Then, it also went out when I braked and sometimes when I turned corners. Then it went out all together. At about the time this happened, my fasten seat belt light started flickering. The real concerning part for me was that my Power Steering has become unreliable too. Other things that have gone wrong all at this same time are my window wipers and my power windows. I've been looking for help on this site and found these two questions (adresses pasted below) and think it might be the same thing, although I haven't had the chance to try this and see if it fixes it.
http://www.faqfarm.com/Q/Why would a %2796 Taurus lose power steering and radio
http://www.faqfarm.com/Q/Why the power steering gets stiff and the power windows and stereo will not work when my 1997 Taurus is in gear
check the dash board ground connection...it may be loose
most likely the harness on the side of the radio, drivers side, has chafed through, pull radio and tape over the wires attached to the side of the radio.
The alternator is on its way out.
Might be a weak battery
you may have already checked, but to me it sounds like you have a loose connection at the battery
Check the switch at the brake pedal .
bad or failing alternator
On my Lexus I had an issue with the lights staying off when it was cold. This was the case for all of my dashboard lights. Then they would flicker back on. There are Caps on the board for the instrument panel that were blown. This was the case for my fuel cage that didn't work consistently work as well
If all of the lights flicker I would check for a loose or corroded ground. If only 1 light flickers then check to see if the bulb is properly plugged in to its socket, or if there is dirt, corrosion or rust causing a poor connection.
Most probably, a loose wiring connection.
Had that problem when still under warranty on my 02 when all lights would momentarily flicker, including the head lights, and the dealer replaced my alternator. There was a service bulletin put out on that problem. Also just recently, my lights would dim and I found a broken ground wire on the left front side on my engine block after checking all ground connections. Good luck.
bad wire connections inside the fan
Check your fuses - they are operated separately
On a 1999 GEO Tracker, a bad fuse can cause the headlights and dash lights to blink. A bad voltage regulator or alternator can also cause lights to blink and flicker.
It's probably your brake lights, not your brakes.
i think your car is broken
Resistance buildup in the battery cables. Mine did just that (dash lights flickering, dial gauges jumping up and down, etc.) and once I replaced both battery cables, the problem disappeared. This happened 4-5 months ago.
Hey Mitch ==Probably a bad ground on the lights. Check it out. GoodluckJoe
the dash and radio lights are supposed to dim when the headlights come on. Make sure you have the brightness of the dash lights turned up as much as possible.
Check the alternator output, you may have a failed voltage regulator or bad brushes in the alternator resulting in an oscillating voltage value. This assumes that the flicker is relalted to engine rpms.
Not enough power to starter, jump it and then ensure alternator is good. Also check battery condition.
replace the break light bulbs?
Your entire automobile electrical system is grounded to the frame of the vehicle. A loose or corroded ground wire can cause the dash lights to Flickr and the car to stall out.
I would say 1 of your door switches are bad or your door doesn close all the way.
because it is using up lots of power :)