I was faced with the same problem on my
L3430 HST. My machine had a single rear remote which is used for a hydraulic top link. It also had the backhoe hoses attached to the PB block so I tapped into that circuit and made up a fender mounted valve setup to control 2 more remotes:
View attachment 768565
I ordered 2 more OEM coupler housings and added them to the stack:
View attachment 768566
This also allows me to add a tilt cylinder for use when the snow blower isn't attached.
The project cost less than half what the dealer wanted to add 2 OEM remotes.
BTW, I traded the
L3430 but kept the valve, hoses, 2 remote housings and the ROPS mounting bracket. PM me if you're interested.