CrocEyes Posted yesterday at 04:04 PM Share Posted yesterday at 04:04 PM Hey all, I am working on a 96 RD688 and I have a short or shorts to the frame somewhere. When I disconnect the ground baytery switch the the frame goes to battery voltage. I get various voltages on the service side of the fuse block, but removing all fuses doesn't completely remove voltage from the frame. What would be really helpful is the fuse block diagram or at least labels for the fuses. Thank you Quote Link to comment https://www.bigmacktrucks.com/topic/75653-1996-rd688-short-to-frame/ Share on other sites More sharing options...
Joey Mack Posted yesterday at 10:26 PM Share Posted yesterday at 10:26 PM Are the positive batt wires rubbing the batt box and charging the frame. That model year is a neg ground system. Quote Link to comment https://www.bigmacktrucks.com/topic/75653-1996-rd688-short-to-frame/#findComment-577349 Share on other sites More sharing options...
Popular Post Geoff Weeks Posted 23 hours ago Popular Post Share Posted 23 hours ago If you are removing the ground, but leaving the + connected, then you will see a voltage between the frame and the - side of the battery. Esp if measuring with a digital voltmeter. The question is: are you seeing a draw on the batteries when everything is shut off? 3 Quote Link to comment https://www.bigmacktrucks.com/topic/75653-1996-rd688-short-to-frame/#findComment-577352 Share on other sites More sharing options...
mrsmackpaul Posted 14 hours ago Share Posted 14 hours ago Is the short there with all the fuses out and the ground connected ? You will still see voltage even with fuses etc out I woukd think as most radios have a side thats live to the battery + all the time to store memory of the radios, then theres clocks etc A amp gauge is probably what you need here I assume it still has the terminal strips on the fire wall ? I would pull all the fuses Then reconnect the battery negative, just sit it on the terminal and see if it arcs If so I'm guessing the battery + lead goes straight to the terminal strips ? Try lift the + lead at the terminal strip and touch the negative again If it's still shorted The short is between the battery and the terminal strip and Joey was onto it Paul Quote Link to comment https://www.bigmacktrucks.com/topic/75653-1996-rd688-short-to-frame/#findComment-577366 Share on other sites More sharing options...
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