Please note this thread has been inactive for 90 days. For the best results, please start a new thread.
Results 1 to 7 of 7
  1. #1
    Lieutenant coastalrichard's Avatar
    Join Date
    Apr 2009
    Location
    Paradise...Florida's Forgotten Coast
    Posts
    1,253

    Default Inductive Volt Meter?????????????

    My total knowledge of electrical issues will fit nicely under your fingernail. I have some wire locations that are impossible to get a standard lead to the connection to test for voltage. I know there are inductive timing lights. Is there such thing as an inductive meter
    2007 Mariah DX212 w/ 2007 Merc 150 Saltwater



    "Knot A Lot"

    Finally...my boat is not the oldest vehicle in my yard!
    ...and there's a prayer in every post for my friend, Sasto...

  2. #2
    Commander RogersJetboat454's Avatar
    Join Date
    Jul 2010
    Location
    Somewhere in the North East
    Posts
    2,954

    Default Re: Inductive Volt Meter?????????????

    Quote Originally Posted by coastalrichard View Post
    My total knowledge of electrical issues will fit nicely under your fingernail. I have some wire locations that are impossible to get a standard lead to the connection to test for voltage. I know there are inductive timing lights. Is there such thing as an inductive meter
    For measuring amperage draw, yes. Voltage, not so much. Where are your wires? Got any pic's? Myself or others may be able to give you pointers on creative ways to check what you need to if we can see what your working on.
    1976 Rogers Custom Boats 18' "Bonneville" W/ Chevy 454/ Berkeley 12JC

    Care Taker of 1976 Glastron V-184 Crestflight W/ Volvo 170B/280 I.O.
    & 1969 Starcraft W/ 1956 Evinrude 7.5hp Fleetwin.

  3. #3
    Lieutenant coastalrichard's Avatar
    Join Date
    Apr 2009
    Location
    Paradise...Florida's Forgotten Coast
    Posts
    1,253

    Default Re: Inductive Volt Meter?????????????

    Well, the problem is that my fuel gauge has stopped working. Prior to removing the sender (it's gonna be a bear) I want to prove that it is not electrical in nature, so I started testing the circuits. I have proven good connections on the negative side at both the helm and the sender. I have proven the positive circuit at the helm but cannot prove the circuit at the sender due to the fact that I can't get a lead on the wire at the sender (it's got a thick insulation shield and, being under the sole, I don't want to remove insulation to test). Hence, I want to know if there is current in the positive wire from the sender. I feel like once I have ruled out power then I have to conclude that the sender is not working. Am I making sense?
    2007 Mariah DX212 w/ 2007 Merc 150 Saltwater



    "Knot A Lot"

    Finally...my boat is not the oldest vehicle in my yard!
    ...and there's a prayer in every post for my friend, Sasto...

  4. #4
    Supreme Mariner bruceb58's Avatar
    Join Date
    Mar 2006
    Location
    Peoples Republic of California
    Posts
    18,377

    Default Re: Inductive Volt Meter?????????????

    Quote Originally Posted by coastalrichard View Post
    Hence, I want to know if there is current in the positive wire from the sender.
    No way you are going to be able to measure that.

    Take the 2 wires off the gauge that go to the sender and measure the resistance. Depending on the level of your tank, is probably going to measure anywhere from 20 to 300 ohms or so.

    You can also test your gauge by putting a potentiometer across the gauge(after removing those same wires) and vary it between those same numbers to see how it works.
    1998 Wellcraft Eclipse 24 Cuddy
    Volvo Penta Duo-Prop 7.4L "LK"

    2006 Sun Tracker Party Barge 21
    Mercury 90 4-Stroke FI
    "Common sense is not very common"
    "Failing to prepare is preparing to fail." -- John Wooden

  5. #5
    Supreme Mariner Silvertip's Avatar
    Join Date
    Sep 2003
    Location
    Midwest
    Posts
    25,770

    Default Re: Inductive Volt Meter?????????????

    The sender is very likely grounded back at the stern so all you need to do is disconnect the pink wire at the gauge (the one on the "S" terminal). You then measure resistance between the pink wire and ground. 240 ohms with an empty tank, 109 ohms at 1/2 tank and 33 ohms full tank. If the reading is within reasonable range of these values then the sender is good. If it measures open circuit or something very different than above, the wire is bad or the sender is bad.

  6. #6
    Supreme Mariner bruceb58's Avatar
    Join Date
    Mar 2006
    Location
    Peoples Republic of California
    Posts
    18,377

    Default Re: Inductive Volt Meter?????????????

    Yep, Silvertip is correct, only one wire going back there from the gauge.
    1998 Wellcraft Eclipse 24 Cuddy
    Volvo Penta Duo-Prop 7.4L "LK"

    2006 Sun Tracker Party Barge 21
    Mercury 90 4-Stroke FI
    "Common sense is not very common"
    "Failing to prepare is preparing to fail." -- John Wooden

  7. #7
    Lieutenant coastalrichard's Avatar
    Join Date
    Apr 2009
    Location
    Paradise...Florida's Forgotten Coast
    Posts
    1,253

    Default Re: Inductive Volt Meter?????????????

    Thanks folks...with clear, concise instructions like that...I think even I can do this
    2007 Mariah DX212 w/ 2007 Merc 150 Saltwater



    "Knot A Lot"

    Finally...my boat is not the oldest vehicle in my yard!
    ...and there's a prayer in every post for my friend, Sasto...

Similar Threads

  1. volt meter
    By renny1 in forum Mercury & Mariner Outboards
    Replies: 3
    Last Post: August 18th, 2007, 03:37 AM
  2. Gauge Rigging/Tach/Hour Meter/Volt Meter 90 HP
    By Chesapeake Explorer in forum Yamaha & Suzuki Outboards
    Replies: 3
    Last Post: July 22nd, 2006, 01:57 PM
  3. OMC - Volt Meter
    By Striper500 in forum Johnson & Evinrude Outboards
    Replies: 3
    Last Post: April 17th, 2006, 05:54 PM
  4. VOLT METER / BATTERY CONDITION METER
    By dd716ted in forum Boat Topics and Questions (not engine topics)
    Replies: 1
    Last Post: March 4th, 2004, 12:58 PM
  5. volt meter/how to use
    By gee gee in forum Non-Repair Outboard Discussions
    Replies: 10
    Last Post: December 13th, 2002, 01:41 PM
  1. iboats Forum Directory - Over 100,000 forum posts organized by topic