We do offer the Curt Class II trailer hitch receiver # C12232 for your 2000 Mercury Sable. Thit hitch has a 1-1/4-inch size receiver opening and is rated for a maximum tongue weight load of 350-lbs.
It is likely that the weight of your hitch-mount carrier and your electric cart will exceed this 350-lb maximum and/or the maximum tongue weight allotted by your Sable. It may be that your Sable itself cannot handle this much weight; your owner's manual will indicate the car's tongue weight... view full answer...
I spoke with my contact at Curt and he stated that the reason the T-Connector Vehicle Wiring Harness, # C55375, cannot be used with the 2000 Mercury Sable Wagon is because it uses a different type of connector on the tail light wiring. This is the same issue with harnesses from other companies as well.
We do have a wiring harness for your vehicle. You will need to use 4-Pole Hardwire Kit Including Circuit Tester, # 18252. This is a typical hardwire harness. To install it, you will need... view full answer...
We do offer a 4-pole trailer wiring harness with simple plug-in installation for your 2004 Mercury Sable wagon. You can use Curt T-Connector harness # C55343. This harness provides a substantial maximum current output of 3-amps per stop/turn circuit and 5-amps for the taillight circuit. Installation instructions are linked along with two helpful articles. view full answer...