bookerdana

My 1993 Lexus Es has a battery that is unmarked for poitive,or negative. one has a single large wire coming off it,the other two smaller wires. How to tell which is which. My older battery was the same

DS76

Typically, this information is listed in your owners manual, as it provides information on how to safely jump start your car, or you can use a volt meter to measure across the post. If you are still having trouble, your local auto parts store can help you.

JetsonES

Trace where the wires are going. A negative terminal typically has one wire coming off of it that is attached directly to the car's chassis. A positive terminal may have multiple wires coming off of it leading into the wire harness or a fuse box.

PFB

Ridiculous! No battery manufacturer sales an unmarked battery as to which pole is positive and which is negative. It makes no sense at all.

There HAS to be a visible mark somewhere clearly indicating the positive and negative posts.

Look again carefully and you'll find the marks. They may be stamped on top of the posts themselves, or on the battery casing. It will be in the form of a stamped "+" and "-"

Phil

ES300NZ

side of the casing ? I'm with Phil, this doesn't make sense.

pauloil

or a voltmeter could easily ID the POS post., using the motor as a ground. I agree, look for the mark.

jadu

iTrader: (42)

First off welcome to clublexus. Battery manufactures all differ. I've also noticed they can be hidden at times. If you haven't done so already, remove one connector. The positive and negative designation are sometimes underneath the wires and are not easily seen.

If all else fails, grab a DMM