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*mrhino* · 09-28-2010, 09:14 PM

what Mr. Dude said:
1. you can build a small simple circuit to round off the square wave.. you might also want to do a 'pull up' circuit at the same time to raise it from 5v to 12. this would be my solution.. but im also another guy that can use/program the PCM.

your PCM supplies the speedo pulse. do a google search on, how to make a pull up circuit. less than $10 or you can buy one from autometer or dakota digital one for about $80. I have classic instrument gauges and im about a week away from doing the same thing.

09-28-2010, 09:14 PM	#17
mrhino Account Suspended Join Date: Aug 2007 Location: USA Posts: 1,223	Re: LSx swap Speedo ? what Mr. Dude said: 1. you can build a small simple circuit to round off the square wave.. you might also want to do a 'pull up' circuit at the same time to raise it from 5v to 12. this would be my solution.. but im also another guy that can use/program the PCM. your PCM supplies the speedo pulse. do a google search on, how to make a pull up circuit. less than $10 or you can buy one from autometer or dakota digital one for about $80. I have classic instrument gauges and im about a week away from doing the same thing. Last edited by mrhino; 09-28-2010 at 09:15 PM.