I bought a mirror with LED lights. how can i wire them with the exsisting signals?

Is this the LED type of light fitting? You will need to remove the part to test if the light fitting is getting power. This isn't a hard job but you do need to be careful whe you do this. Tilt the mirror glass as far downwards as it will move. Carefully slide your hand into the gap and apply a firm, GENTLE pressure to 'Pop' the glass and its back plate out of the wing mirror housing. It is held in place with plastic 'push on' clips.
There is One torx bolt on the end furthest away from the door to remove then the light fitting should swing and drop out. Once out you can disconnect the wire plug. With the turn signal turned on use a multimeter set to DC volts to test for power. If you get a regular voltage signal It is most likely a blown light fitting or the bulb if it isn't the LED type.

Request this from manufacturer or dealer.

Did you get them new? If so, there should be a schematic wiring diagram with them. You could also search the net. Google the model of your mirrors, and perhaps there will be site with the schematics. Normally, if it was me, I'd patch the parking lamp wire into the front marker lights, the tun signal wire right where it says, the turn signals, and the other is a ground which can be grounded to anywhere on the bare metal frame. Use your basic wiring skills. If you don't have any basic wiring skills, do some web research on it. You can solve this yourself, you just need some confidence and a little more knowledge.

L.E.D.s use a different flasher rely type. do you have front and rear L.E.D.s

not bulb led light part of mirror dealer, some auto stores or online parts

Its tricky, you have to take the whole mirror apart in order to take the clear lens out where the light comes from. you cannot just replace the bulb. you have to replace the clear lens that comes with a built in led light.
first you pull on the mirror glass. do this very gently.. start from the top on the glass and pull very gently until the mirror comes off.. if you have a heated mirror, after you pull the glass, you will have to disconnect the wire. then you will see 3 torx screws that hold the top part on the mirror. losen those. take the top part off, then from behind you will see two more screws which you losen to remove the bottem part of the mirror. then you will see to clips that hold the led blinker in place. push on those carefully and it should come out.. you will also have to be carefull when you dissconect the wire from the led turn signal. as you might break the clip.. then replace it and follow the these step backwards..

You have a bad ground connection at the rear light cluster Remove and clean them.Make sure all wires are connected.Hope that helps pippall.

Here is a link to a pdf (acrobat reader) file This pdf will show you how to run the proper wiring to your turn signal mirrors..
Cool upgrade!
Let me know how you like them after install.
K

Click here for pdf

If the wires from the mirrors aren't long enough to reach the signal lights, extend the wires with similar guage wires long enought to reach the signal light wires. Make sure to make a good connection when lengthening by useing the same kind of connections that are used to connect your singnal light wires so that you can take your mirros off and disconnect them from right behind where you mount your mirros instead of haveing to disconnect them from way down by your signal lights wires. You can splice into the wires "positive and negitive" to where your signal lights plug into. DO NOT splice into the wires that come off when you remove your singnal lights. That way you dont have to splice and resplice when you have to replace signal light housings. Not that hard really.