Pen logic probe DIY tool Home › Forums › Forum › Pen logic probe DIY tool Tagged: logic pen probe This topic has 0 replies, 1 voice, and was last updated 3 years, 9 months ago by Mnemonics101. Viewing 1 post (of 1 total) Author Posts February 23, 2021 at 4:45 pm #627 Mnemonics101Keymaster This Vidoe shows how to make a logic pen probe from a ball point pen that can be used to test Injector pulse. Power , ground, sensor voltage , computer safe .. https://rumble.com/ve42np-pen-logic-probe.html Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In