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blowing fuses


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garrett12 
Member - Posts: 14
Member spacespace
Joined: June 01, 2010
Location: Virginia, United States
Posted: December 06, 2010 at 7:02 PM / IP Logged  
i have a 2001 huyndia elantra i just put a new headunit in and it worked fine until 2 days later the dash lights and the passanger side tailight wont come on and the fuse keeps blowing.  would it be something i hooked up wrong and if so why would it wait two days
oldspark 
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Joined: November 03, 2008
Location: Australia
Posted: December 06, 2010 at 8:47 PM / IP Logged  
Because it took 2 days to short out?
Or you ran it in at low volume?
i am an idiot 
Platinum - Posts: 13,693
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Joined: September 21, 2006
Location: Louisiana, United States
Posted: December 06, 2010 at 9:41 PM / IP Logged  

You probably used the vehicles illumination wire as ground for the new radio.  Cut the radios ground wire from the wire in which it is connected, and ground the radio to the chassis of the vehicle.

howie ll 
Pot Metal - Posts: 16,466
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Joined: January 09, 2007
Location: United Kingdom
Posted: December 08, 2010 at 10:50 AM / IP Logged  
I like that one Craig, did it myself on a Datsun 240Z in the 70s!
kgerry 
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Joined: February 07, 2004
Location: Saskatchewan, Canada
Posted: December 08, 2010 at 12:12 PM / IP Logged  
probably took two days for you to drive at night and turn on the headlights.....
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
i am an idiot 
Platinum - Posts: 13,693
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Joined: September 21, 2006
Location: Louisiana, United States
Posted: December 08, 2010 at 1:20 PM / IP Logged  
Howie, I do not know of a single installer who has not done that one. 
howie ll 
Pot Metal - Posts: 16,466
Pot Metal spacespace
Joined: January 09, 2007
Location: United Kingdom
Posted: December 08, 2010 at 1:25 PM / IP Logged  
Doubly so when some Nissans even recently (e.g. European Micra) used the side fixing (metal) brackets to ground the OEM head unit, many times I've run a separate ground lead, but if you don't know or test you assume = trouble.
garrett12 
Member - Posts: 14
Member spacespace
Joined: June 01, 2010
Location: Virginia, United States
Posted: December 08, 2010 at 7:38 PM / IP Logged  
i didnt even hook up the illumination wire i used the ground on the harness, i was gonna go straight to the chassis but i decided not to because i wasnt installing a system in there just a head unit.  i did turn the headlights on, they worked fine everything was lit up but something poped over near the glove compartment the day they went out and they didnt come back on even when i changed the fuse and ive been trying to track down the problem through the wires but i have yet to find it
garrett12 
Member - Posts: 14
Member spacespace
Joined: June 01, 2010
Location: Virginia, United States
Posted: December 08, 2010 at 7:47 PM / IP Logged  
i guess i could just ground it to the chassis anyway just to eliminate that as a problem, but i have it hooked up the exact same way as i did when i had a head unit in there the last time and it worked perfect for a couple years.   im thinking also that maybe a bit of water got in ahold to the wires because my girlfriend left the trunk cracked in a storm we had, and the trunk had some water in it around the wires
tommy... 
Gold - Posts: 1,901
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Joined: December 10, 2004
Location: United States
Posted: December 09, 2010 at 11:09 PM / IP Logged  

water + electronics = ??? (ask old spark)

Mr. I...What...Hooking up the illumination...? Is that like using a test light in newer vehicles(winks at howie)...? "why does the radio cut-out when i turn my headlights on"...Hey howie...Have you heard about the scramblers they want to install in vehicles to jam your phone while in your car...Just wondered if it had any traction on that side of the pond!

M.E.C.P & First-Class
Go slow and drink lots of water...Procrastinators' Unite...Tomorrow!
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