https://www.etrailer.com/tv-Hitch-install-2010-Mazda-CRX.aspx
Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.
Today on this 2010 Mazda CX-7 we will be installing Curt hitch part number 12093. the first thing we want to do in preparation to installing our trailer hitch is to lower the exhaust out of the way. There are four hangers, two per side, one at the front side of the exhaust and one at the rear side of the exhaust. And then there is two in the same position on the drivers side. :19
To remove the exhaust off its hangers we are going to simply take a spray lubricant, like a WD-40 and spray down the stud. Okay, we want to repeat that process for the other three hangers as well. Before removing the fourth hanger we want to make sure we put some sort of stabilizing strap around the forward side of the exhaust tube here because once we remove all four hangers the exhaust is going to want to come down and possibly fall and damage your exhaust. :47
As you can see we have three existing holes here at the end of the frame rail here on the passenger side. It is going to be the same on the drivers side as well. What we are going to do is take the middle hole here and take a chisel and enlarge it. Now I have the hole just big enough to get both my carriage bolt into the hole and my block in through there as well. So I am going to start by feeding the carriage bolt and block combination into the rear most hole. Again, I am going to take my bolt leader, the threaded potion, we are going to feed it up through this hole and down out through the access hole. We will first take the block and thread it onto the bolt leader and then we will take the carriage bolt and wrap the threads of the bolt leader around the carriage bolt. Feed the block up into the hole, followed by the carriage bolt and pull them down into place. Next we will do the forward most hole. And then finally we will do the middle hole. And then finally we will do the middle hole. And for this we are going to feed the block on and the carriage bolt outside of the frame. Feed the carriage bolt in first, followed by the block, and pull it down into place. You want to make sure the blocks for the forward and the middle holes are not overlapping each other when in position. 2:56
With all three of those into place we want to repeat that procedure for the passenger side and then we will go ahead and put the hitch up in position. With all the bolts in place and tightened down we can go ahead and torque the bolts down. You want to check with the directions to verify the appropriate torque rating for each individual bolt. And with all the bolts torqued down our installation is complete. You want to make sure to put your exhaust back up on its hangers and remove the strap that was supporting the exhaust as well. And that will conclude the installation of Curt hitch part number 12093 on a 2010 Mazda CX-7.