Compatible with Suzuki Sidekick 1996-1998 Rear Side Panel Factory Replacement Speakers Harmony HA-R4

got a 92 Suzuki came in with the check engine light is on all the time we try to flash the coats in a won't flash there's a hidden switch and these is really difficult to find I'm going to show you where it's at says this between the steering column and left speaker which is right here so it's back here even if you take this off you still can't see it it's you have to look from down below and I will take a picture and show you exactly what it looks like but it's located right back in here up in there and that's where the hidden switch is there you go