Dealer-Installed Alarm Removal and Part Numbers

Hey guys, I just bought a 2022 TRD OR. Dealer installed a stupid Karr alarm even though both my salesman and I told them not to. While removing it, I noted that they had done a crap job installing it which had made the violet starter signal/safety switch wire from the C27 plug extremely short. It was so short that rejoining them was not possible. In the off chance the dealer broke the plug, I started looking for the parts to fix it which was easier said than done.

Toyota does not seem to readily sell them and nor does any service literature make any mention of part numbers. The only easy thing to find is the $3,000 instrument harness haha. I figure with the way things have been the past few years with dealers installing stupid alarms that cut and tap the harness needlessly, people in the future may need this info to repair their cars.


Anyways, I've been tirelessly searching for the specific C27 connector (connects to Certification ECU/Smart Key) and I believe I have found it. It seems to be a TE Connectivity stackable 0.5 and 1.5mm connector, 1903607-1 and 1903611-1 upper and lower parts respectively. They also sell both size pins with 0.5mm being 1827855-1 and 1.5mm 638652-2 (I think these are correct but I'm not certain).

Hopefully this is useful to someone else besides myself.