Winegard t4 and external dish to wall on rv

[HellBilly]

so I have a customer who I installed a t4 on his RV that he parks inside with the old system I had it so he could switch to an external dish on garage and watch tv inside. With the Wally and t4 it recognizes as a sw64 and external as dpp TWN cust is 75 and doesn’t want to run check switch every time, so I’m thinking I can run an old sw64 with 3 legacy lnbs to an a/b switch to the Wally and trick it. Any ideas if this is possible?
Open to any ideas or suggestions really want to give this guy what he wants ,,thanks

 

[boba]

Idea should work Legacy LNBs and Legacy switch but I can't comment on the Road Trip T-4, but I suspect every time you switch dishes it will need a check switch. The T-4 physically moves the dish to go from 110 to 119 or 129 instead of changing switches I believe.

 

[HellBilly]

Idea should work Legacy LNBs and Legacy switch but I can't comment on the travellar, but I suspect every time you switch dishes it will need a check switch.

The t4 comes back as a sw64 on check switch. Just trying to recreate that with the external dish so all he has to do is hook up a coax and push a button on the a/b switch

 

[boba]

The t4 comes back as a sw64 on check switch. Just trying to recreate that with the external dish so all he has to do is hook up a coax and push a button on the a/b switch

See amended #2 above.

 

[HellBilly]

I just want the Wally to see the outside dish on the building as a sw64 110 119 129 same as the T4