Vehicle-Mounted Arrow Board Troubleshooting

Synopsis: Your arrow board could encounter power issues over time. This could be caused by bad batteries or an issue with one of the components.

This article is valid for the following units: VM-4815, VM-4825, VM-367215, VM-367225, VM-306015 & VM-306025.

• Level: Medium
• Time required: 5 minutes
• Additional equipment required: Voltmeter, replacement parts (optional)

1. Try powering on your controller

1.1. If it doesn't power on, the voltage could be too. Use a voltmeter on the red & black cables of the power connector to see if you are getting 12 volts. If you aren't, the power cable or the truck battery could be at fault.

1.2. You can also try checking the fused lighter plug

Figure 1 - Controller wiring

2. If it powers on, try running a lamp test by going to Tools, Arrow Settings, then Lamp Test

2.1. The lamp test will test your lights individually

Figure 2 - Tools

Figure 3 - Arrow Settings

Figure 4 - Lamp Test

If you see any dim or shut-off lamps, check the positive and negative connectors on the back of them, or simply swap them out with a different lamp. 

Figure 5 - Rear view of a 15-light arrow board

Figure 6 - Rear view of a 25-light arrow board

3. If no lamps turn on, use a voltmeter to check the voltage going to the lamps from the power box

3.1. You will need to use a voltmeter on the white (12v) and black (ground) cables on the 10-pin connector in the power box. Simply unscrew the power box to gain access to the connector.

Figure 8 - G1 power box location

Figure 9 - 10-pin connector

If you are getting 12 volts and the lamps are still not lighting up, you will need to change the power box. If you are not getting any voltage on the connectors, you likely have an issue with the battery voltage. 

If you require any additional help, contact our toll-free number at 1-888-488-7446 or email us at [e-mail]