I was trying to change the instrument panel with new gauges and lights and unbroken body.  So, I changed it and seen the battery charging light is on.  Instead of asking the Honorable List for advice, I changed the whole thing back except the body I kept.  Now, not only the charging light but the oxigen sensor is on too and the headlight don't come on.
I checked all the fuses and did not find anything wrong.
What happened?
Zoltan