How to wire a tractor voltmeter

Written by david sandoval
  • Share
  • Tweet
  • Share
  • Pin
  • Email
How to wire a tractor voltmeter
An automotive voltmeter (centre, under steering wheel) can be wired to a tractor battery. (vintage wheel image by Xavier MARCHANT from Fotolia.com)

Most tractors have no factory-installed instrument gauges. Since many tractor batteries are smaller than conventional automotive batteries, one gauge that may be useful is a voltmeter. To add a voltmeter to the tractor's electrical system, connect the voltmeter in a parallel circuit with the battery. Attach one wire to the battery, and the other to the battery output on the alternator.

Skill level:
Moderately Challenging

Other People Are Reading

Things you need

  • Red electrical wire
  • Black electrical wire
  • Wire stripper
  • 4 ring terminals
  • Soldering iron
  • Electronic solder
  • Electrical pliers
  • Automotive voltmeter gauge
  • Adjustable wrench
  • Drill (optional)
  • Small metal screw (optional)
  • Screwdriver (optional)

Show MoreHide

Instructions

  1. 1

    Install the automotive voltmeter to the tractor dashboard. If there isn't a pre-drilled place to install the voltmeter, drill a small hole in the tractor dashboard. Attach the voltmeter to the dashboard with the metal screw, and tighten the screw with the drill so it holds the voltmeter firmly to the dashboard.

  2. 2

    Cut a piece of red wire long enough to reach from the alternator to the voltmeter, using the electrical pliers. Strip each end of this wire of 1/2 inch of insulation, and place a ring terminal over each end of the wire. Solder one ring terminal to each end of the wire, using the soldering iron and electronic solder. Cut a piece of black wire long enough to reach from the battery to the voltmeter. Strip each end of this wire of 1/2 inch of insulation, and place a ring terminal over each end of the wire. Solder the ring terminals to the wire ends.

  3. 3

    Search for the "BAT" terminal on the alternator. Loosen and remove the terminal retaining nut with an adjustable wrench. Place the one of the ring terminals connected to the red wire over the "BAT" terminal, and reinstall the terminal retaining nut. Route the other end of this wire to the voltmeter. Loosen and remove the retaining nut on the voltmeter positive terminal bolt. Place the ring terminal over the voltmeter positive terminal bolt. Replace the terminal nut, and tighten so that it holds the ring terminal snugly to the voltmeter positive terminal.

  4. 4

    Attach the free end of the black wire to the negative voltmeter terminal. Solder the wire to the terminal. Route the other end of this wire to the voltmeter. Loosen and remove the retaining nut on the voltmeter negative terminal bolt. Place the ring terminal over the voltmeter negative terminal bolt. Replace the terminal nut, and tighten so that it holds the ring terminal snugly to the voltmeter negative terminal.

Don't Miss

Filter:
  • All types
  • Articles
  • Slideshows
  • Videos
Sort:
  • Most relevant
  • Most popular
  • Most recent

No articles available

No slideshows available

No videos available

By using the eHow.co.uk site, you consent to the use of cookies. For more information, please see our Cookie policy.