Great deals on TJ parts on Amazon!

Looking for parts for your Jeep Wrangler TJ? Checkout the selection of TJ parts Amazon has to offer, many with 2-day Prime shipping!

Click the image below to browse TJ parts on Amazon.

Jeep Wrangler TJ Parts on Amazon

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.

Check Gauges light came on

Jerry Bransford

TJ Guru Moderator
Staff Member
Supporting Member
Nov 9, 2015
Fleming Island Florida
The voltmeter indicating 19 often means nothing more than the battery connectors are loose, dirty, or corroded indicating the alternator is not seeing the voltage from the battery. Wire brush both the connectors and the battery posts after physically removing both connectors. Even if they look perfectly fine they can still have a bad connection to the battery.
  • Like
Reactions: Blondie70


TJ Expert
Supporting Member
Lifetime Supporting Member
Mar 10, 2020
Jacksonville, FL, Quezon Philippines
The ECM may not be seeing the system voltage due to dirty or loose electrical connections.
Check the three 32 pin harness connectors for oxidation on the pins and clips; then firmly snap the harness connectors into the ECU receptacles.
Please provide your profile information so forum members can better assist you to troubleshoot your problem.