I keep my 900 in the garage as it is used daily. The pickup stays in the equipment shed. There is just no place safe for a garage door opener in a 900. Because of this, I use a remote dash mount switch on it. I started doing this back in the 70s when I drove a CJ5 jeep.
All you need is a normally open push button switch and about 3 foot of shielded wire. Open the door opener and find the switch points. One will be the common ground. Solder the shield wire to this and the other to the other switch point. Then add the new switch.
I hold the opener with a magnet under the hood. You can just cable tie it to the wiring harness. I put the new switch in the knock out for the direction signals. It’s been like this for 5 years with no problems. Even with power washing.
All you need is a normally open push button switch and about 3 foot of shielded wire. Open the door opener and find the switch points. One will be the common ground. Solder the shield wire to this and the other to the other switch point. Then add the new switch.
I hold the opener with a magnet under the hood. You can just cable tie it to the wiring harness. I put the new switch in the knock out for the direction signals. It’s been like this for 5 years with no problems. Even with power washing.