shazaam Posted October 14, 2011 Report Share Posted October 14, 2011 I'm running a 14v setup with the D1400's but my car has issues with anything above 16.4. My a/c won't work until I bring the voltage back down to 15.4 then back up and I get like two lights on my dash at 16.5v or higher. I think they are the abs light and the e-brake light. And I've finally found out that the reason why my car idled funny is because of the voltage being over 15.8v. So I decided to get the step down modules so I can charge at 16.8v daily without having to worry about my car's electronics. My question is how many do I need? I just want to run the factory electronics (a/c, pcm, etc.) and that's it. Also does the wiring coming out the back or what not look like? Most of the pictures I've seen just show the actual module with no wiring. Thanks Quote 2004 Chevy Trailblazer: Deck: Pioneer Premier DEH-P980BT Mids: 4 Selenium 6W4P's Highs: 2 AQ Tweeter's + 2 Crescendo Tweeters + 2 Power Acoustik NX-5 Bullet Tweeters Highs Amp: MB Quart Onyx 4.125 Bass: 2 18" DC Audio XL's <-- Soon to be 8 Sundown SA-12's Box: 13.37 Cu Ft @ 35 Hz with 3 8" sonotubes Bass amps: Crescendo BC3500 @ .5 ohms (2nd one coming soon) 325a Singer Alt! 375a at 16+ volts! 2 XS Power D1400's www.youtube.com/user/phukudmss Link to comment Share on other sites More sharing options...
Nathan @ XSpower Posted October 14, 2011 Report Share Posted October 14, 2011 Why wouldn't you just turn your charge voltage down to the 16V range and get a 14V charger to top the batteries of every couple weeks? That would be easier and more cost effective than running the step downs. Quote Link to comment Share on other sites More sharing options...
shazaam Posted October 14, 2011 Author Report Share Posted October 14, 2011 Because I have to constantly bring the voltage down to 15.4 to just turn the ac on which is usless when I remote start, and my car idles funky past 15.8 at least once a day. So mainly for convience. Plus I'd like to have the option to keep my batteries topped off when driving for random demos and what not. Quote 2004 Chevy Trailblazer: Deck: Pioneer Premier DEH-P980BT Mids: 4 Selenium 6W4P's Highs: 2 AQ Tweeter's + 2 Crescendo Tweeters + 2 Power Acoustik NX-5 Bullet Tweeters Highs Amp: MB Quart Onyx 4.125 Bass: 2 18" DC Audio XL's <-- Soon to be 8 Sundown SA-12's Box: 13.37 Cu Ft @ 35 Hz with 3 8" sonotubes Bass amps: Crescendo BC3500 @ .5 ohms (2nd one coming soon) 325a Singer Alt! 375a at 16+ volts! 2 XS Power D1400's www.youtube.com/user/phukudmss Link to comment Share on other sites More sharing options...
Nathan @ XSpower Posted October 25, 2011 Report Share Posted October 25, 2011 Step downs are good for 25amps continuous and 50amps max, so you will need at least 2 but more like 3 to run your vehicle. Any way to add a second alternator? The wiring is one input wire and two output wires that step down to different voltages. Just pick the one that works best for you and wire them up. Quote Link to comment Share on other sites More sharing options...
shazaam Posted November 14, 2011 Author Report Share Posted November 14, 2011 Sorry for the late response. I never got a notification for your reply. As far as I know Boilermaker is the only person to have dual alts on a i6 Trailblazer and it looks like it was a difficult job. I am looking at the HF1415 IntelliCharger and it seems nice. The only problem with just sticking with a battery charger is that I still have to deal with the issues of my a/c and fluctuating idle unless I keep the voltage at like 15.4-15.8. What does the output wire go to? the factory connections that go to the battery or the fuse boxes or something? Quote 2004 Chevy Trailblazer: Deck: Pioneer Premier DEH-P980BT Mids: 4 Selenium 6W4P's Highs: 2 AQ Tweeter's + 2 Crescendo Tweeters + 2 Power Acoustik NX-5 Bullet Tweeters Highs Amp: MB Quart Onyx 4.125 Bass: 2 18" DC Audio XL's <-- Soon to be 8 Sundown SA-12's Box: 13.37 Cu Ft @ 35 Hz with 3 8" sonotubes Bass amps: Crescendo BC3500 @ .5 ohms (2nd one coming soon) 325a Singer Alt! 375a at 16+ volts! 2 XS Power D1400's www.youtube.com/user/phukudmss Link to comment Share on other sites More sharing options...
Nathan @ XSpower Posted November 15, 2011 Report Share Posted November 15, 2011 The output wire from the step down would go to anything you want stepped down. In my opinion you are going to be much better just staying with 12V or running the second alt. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.