How about Mangel HH, thanks for your kind response, I already checked the battery ground wires, I have not checked the others, the alternator is new just one day and the fault was made after putting it. It happened to me to tell you that if I disconnect the alternator and start it with the pure battery it works very well, even lights and engine very well while the charge lasts, but when connecting the alternator the fault returns, I tried one that I got used later with which They fixed me but this alternator is new. I think that maybe you see one of the many harness cables that is short.
Thanks Mangel HH. Sorry for the delay. Check with multimeter and the alternator is fine, the battery too, but looking between the harness I found two pairs of melted wire, they were of horn and cleaners that although apparently they were not completely crossed maybe if it affected. I have changed some fuses including the alternator and the problem decreased a lot. I will continue to check the main lights and relay lights and the land you mentioned to me hopefully that is it.