what an night!!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**truckdude239** · 12-15-2005, 08:52 AM

ttt

ChevLoRay · 12-15-2005, 11:19 AM

You said that the radio was hooked to the junction block. It has a memory circuit, and that circuit consumes power all the time. Did you guys sit in your truck and listen to the radio, while waiting for the tow truck?

If you want to find the source of the "short", be sure you have a hot battery before starting the following procedure. With the battery disconnected (one terminal only), pull one fuse to eliminate, let's say....the tail lights. When you reconnect the terminal, look for an arc, or listen for the sound that the arc makes when you touch the terminal to the post. If so, then the bad circuit is somewhere else. Keep pulling fuses until you find the circuit that doesn't make the arcing (flash/sound) when you reconnect the terminal to the post.

You might be amazed at what you find.

**71swb4x4** · 12-15-2005, 02:29 PM

Quote:

Originally Posted by ChevLoRay

If you want to find the source of the "short", be sure you have a hot battery before starting the following procedure. With the battery disconnected (one terminal only), pull one fuse to eliminate, let's say....the tail lights. When you reconnect the terminal, look for an arc, or listen for the sound that the arc makes when you touch the terminal to the post. If so, then the bad circuit is somewhere else. Keep pulling fuses until you find the circuit that doesn't make the arcing (flash/sound) when you reconnect the terminal to the post.

You might be amazed at what you find.

This is similar to the way I use. I disconnect one terminal, and put a test light between the disconnected terminal and the battery. If there is a draw the light will light up. Then you can pull fuses, when you pull one and the light goes out then you know which circuit it is.

12-15-2005, 08:52 AM	#1
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: what an night!!! ttt __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

12-15-2005, 11:19 AM	#2
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: what an night!!! You said that the radio was hooked to the junction block. It has a memory circuit, and that circuit consumes power all the time. Did you guys sit in your truck and listen to the radio, while waiting for the tow truck? If you want to find the source of the "short", be sure you have a hot battery before starting the following procedure. With the battery disconnected (one terminal only), pull one fuse to eliminate, let's say....the tail lights. When you reconnect the terminal, look for an arc, or listen for the sound that the arc makes when you touch the terminal to the post. If so, then the bad circuit is somewhere else. Keep pulling fuses until you find the circuit that doesn't make the arcing (flash/sound) when you reconnect the terminal to the post. You might be amazed at what you find. __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.



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