Does your Coleman run on those small green propane canisters?
If so it would require removing the regulator on the stove, and buying an adapter and special hose. These are generally available online. Search by stove model number.
The most popular stove is probably the Weber Q series. But still itís not standard to hook it up that way. But adapter kits are available.
When we owned a TT we bought a Camco 5500 grill it mounts to the side of the TT and works standard with the low pressure connection. Hereís another such grill :
We have the Weber grill and rather than be tethered to the side of our RV we purchased a 1 gal propane tank and short hose. The one gal tank lasts a long time and is simple to have refilled. This way we avoid using those green canisters but, donít have to remove the regulator from the grill. We usually put the grill on the picnic table to use it.