I am getting hold ligth on on my dash board,when i start the engine,the engine fuse break,i have change the alternator n check all the fuses,if i disconnect the wiring from the alternator the engine runs good,if i conected the wire from the alternator the engine fuses breaks,the hold ligth is still flashing..ty..

Start by checking the fuses and then wiring under the dash. A shorted wire could also cause this problem. Or the instrument cluster is bad.

start engine hold at 1500 rpm and disconnect battery if car stops the alternator not working .

First check fuses. The parking lights and dash lights come on with the light switch, but have different fuses. if you have front lights( the switch is good), but no rear, check the grounds in the rear. They are usually mounted to the frame on the drivers side rear. As for the dash they have their own grounds. Places I know are at the steering column and behind the drivers side kick panel. You could also have problems at the plugs them selves, Corrosion. If you have no parking, brake, or reverse lights, it is a ground problem.

alternator belt braking would not stall the engine but your dash would of lit up like a christmas tree. you will need to have the engine on an obd reader to see what the problem is. did the belt snap or was it stripped ? alternator over load would cut the engine out check the fuse in the engine fuse box there is 2, 80 amp fuse in there check these are fine.

Blown fuse or a loose ground strap from engine to firewall.

Hook the battery up or try to jump-start backwards did we?
The ECU fuse gets it's power from the 140 Amp (or 180 Amp, depending on which engine your vehicle is equipped with) ALTERNATOR fuse in the engine compartment fuse block.

SOUND LIKE ALTERNATOR FAULTY.HAVE VECHICLE BATTERY CHARGED OR JUMPED STARTED.WITH ENGINE RUNNING CHECK BATTERY VOLTAGE WITH ENGINE RUNNING SHOULD BE 13.5 - 14.5 VOLTS. IF NOT ALTERNATOR VOLTAGE REGULATOR FAILED.BUT FIRST CHECK ALTERNATOR FUSE AND CHECK ALTERNATOR BATTERY FEED WIRE AND VOLTAGE REGULATOR WIRES FOR DAMAGE OR LOOSE CONNECTION.WHEN YOU TAKE OLD ALTERNATOR TO AUTO PARTS STORE LET THEM TEST ALTERNATOR FIRST.MAKE SURE YOU DONT HAVE ELECTRICAL WIRING PROBLEMS IN VECHICLE.

Sounds like a fuse.

Should be able to check the fuses visually. Look for one that has the small metallic connecter (center of fuse) burned or broken. You can buy a small package of replacements from a part store. Ensuer the package has the correct fuse (there will be a color to the fuse, as well as an amperage printed on the top (i.e., 4A). Here is an image of what they typically look like: http://www.electronics123.net/amazon/pictures/afu.jpg.

BY ANY CHANCE HAS THERE BEEN ANY RADIO INSTULATION LATELY... OTHER THAN THAT LOOK ON LEFT LOWER KICK PANEL UNDER DASH.. GM HAD PROBLEMS WITH A GROUND SCREWED TO SHEET METAL... THE SCREW WORKS IT'S WAY LOOSE LET ME KNOW

What year is this vehicle? It might have an ambient light sensor that has failed if it's 90's+,but older it's most likely the dimmer switch. If it's early 80's you should be able to replace it w/o having to removed the dash,just small panel cover nearby.