**Phweet** Time out! Calling BS on this warranty crap. Any customer modification ONLY affects warranty on the modified part(s) and system(s), not the entire car. That is, you do bad splices and burn the harness out? Sorry, your fault, not covered. Do bad splices and a water pump leaks? Covered, if all other criteria are met (age, mileage, etc.). The myth of a completely "voided warranty" has been around since the 50s or earlier. It doesn't happen.