I have a 1987 Bronco 2 xlt and today when i pressed the 4x4 button it just wouldnt light up and wouldnt make the clicking sounds like it was engaging any ideas?

there is a 4X4 controller--top of right side dash--will have to be checked at that point.

I have a 1999 blazer every thing is engaging and says it is in four high but the front wheels is not pulling

It sounds like your front hubs are worn out. Actually just 1 of them. You can put in 4 high or low pull it forward chock it raise the frnt wheels to see which one isnt locking by turning it. Most people just go ahead and buy new set of manual Waren lockers.

i would believe that u prob have a bad lock out, change it and u'll be good to go, take only couple minutes if you have the right allen wrench

can't get the 4 wheel drive 2 engage when i push the buttom 2 engage it

I would check car-part.com. It's a website that will show available parts for your car from auto recycler's in your area.

It could be the switch, a fuse, a relay, the motor that engages the transfer case (very common problem) or the transfer case itself. Disconnect the motor arm from the transfer case and see if you can move the shift rod by hand. If you can then you know the transfer case is probably OK and you can test from the motor back to the switch.

have solenoid that engages 4x4 checked

that box does engage the transfercase to 4x4,there is a small electric motor on the transfercase thats probably bad,try hitting it lightly with a hammer because just like an electric window motor it has brushes in it as well,but its possible that motor is shorting out causing it to draw alot from the charging system,at least my 1993 Ford Bronco did the same thing and thats what i replaced and now it works fine.

The sound is not coming from the glove compartment, it is coming from the panel behind the drivers seat, that's where the relays and computer are located.
The relays click and apply power to a transfer case motor.
The motor attempts to turn a shaft that engages the front drive shaft.
When the computer thinks the shaft has NOT turned it tries again.
It will try three times then quit, figuring the shaft has not turned.

Get someone to crawl under the vehicle and engage the 4WD (just turn on the ignition- do not start the engine) See if they can hear the motor attempt to turn the shaft, it will make a clicking sound.
If not the connections or the motor may be bad.

I have found the most probable cause is the relays on the control board.
If you are technically adept --
you can remove the small side panel from behind the drivers seat and remove the control board. (remove the power plugs first)
Clean the relay contacts and bend them a little to give them more 'wipe' to keep them clean longer.
Put it back in and turn on the ignition.
Then push the RESET button on the side of the board.
Try the in / out 4WD a couple of times. If it doesn't work turn off the ignition, turn it back on and push the reset button again.