Locating an electrical short.

Old 07-18-2011, 08:53 PM
CF Veteran
Thread Starter
Turbo X_J's Avatar
Join Date: Sep 2009
Location: ☼ Blackhole Sun
Posts: 8,567
Year: My Jeep is a GMC
Default Locating an electrical short.

(Note this does not work in all situations, it's entirely dependent on the amperage draw of the particular circuit.)

You'll have to track down the shorted wiring and stop wasting fuses.

So heres a tip,
1. Buy a generic 2 prong turn signal flasher.
2. Solder up two wires with spade terminals on one end and solder to the prongs of the flasher the other.
3. Yank the blown fuse and insert your wires from the flasher.
4. Yes the flasher will start clicking (it's a self-resetting circuit breaker).
5. Start either under the hood or under the dash your choice, and start shaking wire harnesses.
6. When the flasher stops clicking there is your short.
7. Repair the wiring, yank the flasher, and replace with fuse.

Last edited by Turbo X_J; 07-18-2011 at 08:57 PM.
Turbo X_J is offline  
Old 07-19-2011, 05:59 PM
::CF Moderator::
JeepingDan's Avatar
Join Date: Apr 2009
Location: CT.
Posts: 18,740
Year: 88
Engine: 4.0 HO

Nice trouble shooting tip.
Here I added a couple pics.
For those with bad ears you can also use a extra loud flasher.
Attached Thumbnails Locating an electrical short.-image-3497958132.jpg   Locating an electrical short.-image-2731181569.jpg   Locating an electrical short.-image-3523818565.jpg  
JeepingDan is offline  
Related Topics
Thread Starter
Last Post
Modified XJ Cherokee Tech
08-23-2018 07:24 PM
12-02-2015 07:48 PM
11-05-2015 09:30 AM
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
10-05-2015 08:29 PM
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
09-25-2015 11:44 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools
Search this Thread
Quick Reply: Locating an electrical short.

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

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 Amazon.com and affiliated sites.