Sandblast Posted May 8, 2004 Share Posted May 8, 2004 I just installed a factory receiver hitch with wiring harness on a 2004 RX 330. The vehicle was not originally equipped with the optional towing package. All of the installation went great until I checked the plug for power. It appears that there is no power to the plug located under the storage bins in the rear of the vehicle. Is there a step I am missing? Thanks in advance for any information. Quote Link to comment Share on other sites More sharing options...
lexena Posted April 20, 2005 Share Posted April 20, 2005 I just installed a factory receiver hitch with wiring harness on a 2004 RX 330. The vehicle was not originally equipped with the optional towing package. All of the installation went great until I checked the plug for power. It appears that there is no power to the plug located under the storage bins in the rear of the vehicle. Is there a step I am missing?Thanks in advance for any information. ← Check the fuse box, and install a fuse for it. Quote Link to comment Share on other sites More sharing options...
Sandblast Posted April 24, 2005 Author Share Posted April 24, 2005 I have checked the fuse box, and according to the layout chart under the lid the fuse is installed and looks good. I fear a factory defect in the wiring. :( Quote Link to comment Share on other sites More sharing options...
mikey00 Posted April 24, 2005 Share Posted April 24, 2005 A defect in the factory wiring is highly unlikely. This was a common problem many had with 2001 RX (not sure if this applies to 04). They would put in the fuse and add the pigtail by plugging into the harness in the black plastic compartment under the spare but found there was no power. In 2001 there was also a plug in power module that needed to be added. Did you use the module? Quote Link to comment Share on other sites More sharing options...
jimmouse Posted April 25, 2005 Share Posted April 25, 2005 A defect in the factory wiring is highly unlikely. This was a common problem many had with 2001 RX (not sure if this applies to 04). They would put in the fuse and add the pigtail by plugging into the harness in the black plastic compartment under the spare but found there was no power. In 2001 there was also a plug in power module that needed to be added. Did you use the module? ← I have a used 2001 RX too. I am thinking about installing the hitch myself. Do you have a picture about the power module? I found a blue box plugged into the wireharness in the trunk ( dirver side, close the spare tire location). Since I bot it used, I am not sure what it is. Thanks. Quote Link to comment Share on other sites More sharing options...
Sandblast Posted April 27, 2005 Author Share Posted April 27, 2005 Based upon the other posting about installing trailer hitches on the 04, I do not think that there is a power module needed. There is a plug located under the driver side rear compartment that matched the factory supplied wire harness that came with the hitch. Was the power module stock with the car or was it aftermarket? Quote Link to comment Share on other sites More sharing options...
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