GMCtrk Posted September 25, 2018 Report Share Posted September 25, 2018 2002 tahoe, have mechman 320 alt. The charging post and electrical connector are in the opposite locations of the factory hookups - factory charging wire won't reach. Now obviously, running a 2/0 cable directly from the alt to battery fused. Question is, any need to make up a new cable going from the little red battery box to the alt? Link to comment Share on other sites More sharing options...
blarg456 Posted September 25, 2018 Report Share Posted September 25, 2018 Don't need that anymore. Just save it in case you return things back to stock. Link to comment Share on other sites More sharing options...
GMCtrk Posted October 17, 2018 Author Report Share Posted October 17, 2018 Well, I've installed the alternator and I'm having 2 issues. 1, the alternator is not turning on for around 5 minutes after a cold start. Engine runs purely on battery until the alternator seemingly randomly turns on. 2, battery light keeps flashing in the dash. I have installed the supplied reclocking harness that mechman includes which hasn't changed anything. I also put on a gates HD green belt to ensure no belt slip was present. The only thing left I can think of is that the absence of the factory charging wire to the red junction box is throwing off a signal the pcm is looking for. Link to comment Share on other sites More sharing options...
blarg456 Posted October 19, 2018 Report Share Posted October 19, 2018 Any chance you can take a picture of things? Your alternator a 2 pin or 4 pin? Link to comment Share on other sites More sharing options...
blarg456 Posted October 19, 2018 Report Share Posted October 19, 2018 This is from my truck. You can see where I removed the stock charging wire that went to the alternator. Don't think your truck has a load sensor on the ground or does it? Link to comment Share on other sites More sharing options...
reedal Posted October 22, 2018 Report Share Posted October 22, 2018 No, the sensor didn't come about until the 04 models. Try running an extended wire from the red box that will reach the alt, see if it changes anything. If not, then i would swap the OE alt back in, and check your harness to make sure the wiring isnt damaged. SMD Tool Map https://www.stevemeadedesigns.com/board/topic/193176-smd-tool-map-new-november-2014/ Build log https://www.stevemeadedesigns.com/board/topic/197217-reeds-03-tahoe-hat-sqaq-singer-xs-shca-cockbox-80prs/?page=32 Link to comment Share on other sites More sharing options...
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