midnightzxt Posted November 11, 2005 Share Posted November 11, 2005 Ok,l I've got the dash apart installing a new shift light (video and pics by next week) I have one problem. I need to find a 5 volt power source. where can I find this source? I also have a 12 volt source going to it. Can I just add a resistor? what resisitor? Quote Link to comment Share on other sites More sharing options...
z-ya Posted November 11, 2005 Share Posted November 11, 2005 You can build yourself a 5V regulator circuit using parts from Radio Shack. You want to use this regulator: http://www.radioshack.com/product/index.jsp?productId=2062599&cp=&kw=regulator&kwCatId=2032058&parentPage=search Hear is the datasheet: http://www.national.com/ds/LM/LM340.pdf#page=2 Simple to build, and will regulate the voltage at 5V where just a dropping resistor won't. Look at the "Typical Applications" section of tha datasheet. Quote Link to comment Share on other sites More sharing options...
midnightzxt Posted November 11, 2005 Author Share Posted November 11, 2005 way too complicated... lol where can i find a 5V out source on the V2.2 board? Quote Link to comment Share on other sites More sharing options...
mobythevan Posted November 11, 2005 Share Posted November 11, 2005 You can tap off TPS Vref maybe, it supplies 5volt. I have used it for small stuff in the past that doesn't require much current. Quote Link to comment Share on other sites More sharing options...
midnightzxt Posted November 11, 2005 Author Share Posted November 11, 2005 hey moby, how did you connect to the pin 10 and 11 on the pcb for the shift light? Quote Link to comment Share on other sites More sharing options...
mobythevan Posted November 11, 2005 Share Posted November 11, 2005 Its been a while but I soldered wires to connect up X10 and X11 to the harness which in turn brought them out to the relay block on S1 and S2 or something like that. Anyway I got them out to unused terminal block locations on the relay board. Quote Link to comment Share on other sites More sharing options...
z-ya Posted November 12, 2005 Share Posted November 12, 2005 You installed an MS, and you think a three terminal regulator is too complicated? Three pins, input, output and ground. How much simpler could it get? I wouldn't suggest just hooking up stuff to the TPS 5V as the MS uses the same regulator internally which is only good fo 1A. Practially the whole MS runs off that internal regulator. How much current does the shift light draw? Are going to run a wire from your TPS all the way under the dash? You are just asking for noise to get coupled into the TPS circuit. When noise gets on the TPS signal, your engine will start bucking like a bronco, not pretty. You are better off doing a simple voltage divider with two resistors, but that is actuall more complicated than the $1.59 5V regulator from Radio Shack. You can do a hack, or you can do it right. Quote Link to comment Share on other sites More sharing options...
midnightzxt Posted November 12, 2005 Author Share Posted November 12, 2005 hahaha... i have a VERY basic knowledge of electronics. Luckily I'm in college and I had 2 electrical engineers (one a grad student) to help me. I did build this shift light tho... and i couldn't put it all together in my head (once again another electical engineer helped me ). but, as it turns out, once I get a laptop to change the megatune settings, with luck i'll post up a vid. Quote Link to comment Share on other sites More sharing options...
midnightzxt Posted November 12, 2005 Author Share Posted November 12, 2005 cross your fingers, hopefully at the end of today you will have a video of a WORKING shift light. It's in the car, the car can run, so all i have to do is change the settings. My next feat is to figure out how to host a video file Quote Link to comment Share on other sites More sharing options...
midnightzxt Posted November 14, 2005 Author Share Posted November 14, 2005 well, here are some rough images: before after Quote Link to comment Share on other sites More sharing options...
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