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also is there a way to wire it up so the diagnostics and check eng. light still work?
Thanks


they will work if you do the wiring correctly. I know first hand it works, cause we had a bad o2 sensor, and got the CEL. we just plugged up the obd2 reader and checked out the code, fixed the problem and cleared it.

you can also connect in an OBD2 plug to the wiring also. so you can get diagonistic codes easily.