Kung ipakabit mo iyan sa labas, then mag-warranty claim ka, hindi naman nila malalaman na hindi sa kanila galing iyan. O kaya sa ibang dealer ka mag-claim.

Hindi naman sila ganun kahigpit sa ganyan unless it's you electricals that fail then talagang hahanapan ka nila ng butas.

They cannot deny you warranty work (e.g. your engine blew up) just because you have a third party central lock system.

Kung magaling ang installer mo, it will usually be leagues ahead of the guy the Casa subcontracts (wala naman silang in-house) to do the work.