I installed some LED taillights on my 02. However, now the taillight light is on on the dash. How can I turn that off? Is there a resistor I can solder in?

Also, I installed a header and now the check engine light is on. I have a mil eliminator but what o2 do I install it on? Also, do you have the wire diagram to which wire to solder in? Thanks!

 

You'll need an O2 sim to get rid of the header CEL.

http://www.o2sim.com/

There are several wiring diagrams on my.is for the install of this part on an 02 IS.