Electrical Short. - ZR-1 Net Registry Forums

cvette98pacecar · 07-21-2012

Is there any other fuse panel other than the panel on the right side of the dash?

I am almost positive the 93 has a short. I disconnected the negative terminal off the battery and connected a meter between the Negative wire and the negative on the battery there is 12vdc present on the meter. I pulled every fuse in the fuse panel and I still have 12vdc on the meter.
I checked to see if there was any aftermarket wiring that I could see and I didnt see any.

Any Ideas?

scottfab · 07-21-2012

Quote:

Originally Posted by cvette98pacecar

Is there any other fuse panel other than the panel on the right side of the dash?

I am almost positive the 93 has a short. I disconnected the negative terminal off the battery and connected a meter between the Negative wire and the negative on the battery there is 12vdc present on the meter. I pulled every fuse in the fuse panel and I still have 12vdc on the meter.
I checked to see if there was any aftermarket wiring that I could see and I didnt see any.

Any Ideas?

I would expect 12v doing what you're doing even with no short.

cvette98pacecar · 07-21-2012

Quote:

Originally Posted by scottfab

I would expect 12v doing what you're doing even with no short.

Where would the live circuit be? The ignition is off and all of the fuses are pulled. There should be no circuit unless there is a short.

vilant · 07-21-2012

I know on the 1990 " there is a fuse holder located behind the instrument panel, below and to the right of the glove compartment. To access the the fuse holder, you must remove the cover under the instrument panel on the passenger's side." That's straight from the owner's manual with a pic and an arrow pointing under the glove box. Hope that helps.

Demps · 07-21-2012

Check amperage for a current draw, vs voltage. That will show if there's a parasitic draw. There should be a small bit for powered items with key off.
Ted

scottfab · 07-21-2012

Putting the reason why you'd see 12v on the neg side of the pulled battery wire, why do you think there is a short?
What is the original symptom?
Battery runs down ?

cvette98pacecar · 07-21-2012

Quote:

Originally Posted by Demps

Check amperage for a current draw, vs voltage. That will show if there's a parasitic draw. There should be a small bit for powered items with key off.
Ted

That was the next step after checking for a closed circuit, when the circuit should be open.

VetteMed · 07-21-2012

Quote:

Originally Posted by vilant

I know on the 1990 " there is a fuse holder located behind the instrument panel, below and to the right of the glove compartment. To access the the fuse holder, you must remove the cover under the instrument panel on the passenger's side." That's straight from the owner's manual with a pic and an arrow pointing under the glove box. Hope that helps.

Yep, there's actually 2 fuse holders with 4 fuses in each, if I recall correctly.

WB9MCW · 07-23-2012

I heard from my good friend & mechanic that the cheapo Walmart batteries are actually reused lead innards. Not a melt down and recast lead but actual old plates just being reused.

He claims that is why they crap out so soon.

He said any Interstate Battery guy will confirm this. That was his source and the line he sells.

I have many of the Interstate brand in all my vehicles now and I do have to admit they are good indeed.

VetteMed · 07-23-2012

Plenty of batteries on the shelf at my local Wally World.

07-21-2012	#1
cvette98pacecar Join Date: May 2011 Location: Sydney, Australia Posts: 2,479	Electrical Short. Is there any other fuse panel other than the panel on the right side of the dash? I am almost positive the 93 has a short. I disconnected the negative terminal off the battery and connected a meter between the Negative wire and the negative on the battery there is 12vdc present on the meter. I pulled every fuse in the fuse panel and I still have 12vdc on the meter. I checked to see if there was any aftermarket wiring that I could see and I didnt see any. Any Ideas? __________________ Robert J. DeMarco [SIGPIC][/SIGPIC] [COLOR=blue]G[/COLOR][COLOR=red]rand[/COLOR] [COLOR=blue]S[/COLOR][COLOR=red]port[/COLOR] Registry Lifetime Member NCM Lifetime Member #2655 Pacecar Registry Member [COLOR=red]ZOOM Charter Member - ZR-1 Owners of Michigan[/COLOR] [COLOR=plum][I]ZR-1[/I] Registry member since 2012 [/COLOR] [COLOR=black]1990 LPE "368" Aerobody ZR-1, Last ZR-1 built by John[/COLOR] 1991 Callaway Aerobody ZR-1, DRM 500 1991 Shinoda Aerobody Spyder, 1998 Pace Car

07-21-2012	#4
vilant Join Date: Jun 2012 Location: PA Posts: 772	Re: Electrical Short. I know on the 1990 " there is a fuse holder located behind the instrument panel, below and to the right of the glove compartment. To access the the fuse holder, you must remove the cover under the instrument panel on the passenger's side." That's straight from the owner's manual with a pic and an arrow pointing under the glove box. Hope that helps. __________________ Joe 1990 Bright Red ZR-1 #2599

07-21-2012	#5
Demps Join Date: Jan 2006 Location: Niceville Posts: 998	Re: Electrical Short. Check amperage for a current draw, vs voltage. That will show if there's a parasitic draw. There should be a small bit for powered items with key off. Ted

07-21-2012	#6
scottfab Join Date: Jan 2009 Location: Portland Oregon metro area (Washington side) Posts: 3,207	Re: Electrical Short. Putting the reason why you'd see 12v on the neg side of the pulled battery wire, why do you think there is a short? What is the original symptom? Battery runs down ? __________________ Scott Vett owner since 1979._It's about the car and the people

07-23-2012	#9
WB9MCW Join Date: Dec 2003 Location: McHenry, Il. Posts: 6,607	Re: Electrical Short. I heard from my good friend & mechanic that the cheapo Walmart batteries are actually reused lead innards. Not a melt down and recast lead but actual old plates just being reused. He claims that is why they crap out so soon. He said any Interstate Battery guy will confirm this. That was his source and the line he sells. I have many of the Interstate brand in all my vehicles now and I do have to admit they are good indeed. __________________ http://i119.photobucket.com/albums/o...9mcw/SIG-2.jpg http://i119.photobucket.com/albums/o128/wb9mcw/vcm.gif "The Budget should be balanced, the Treasury should be refilled, public debt should be reduced, the arrogance of officialdom should be tempered and controlled, and the assistance to foreign lands should be curtailed, lest Rome will become bankrupt. People must again learn to work instead of living on public assistance." - Cicero, 55 BC " We the people are the rightful masters of both Congress and the courts, not to overthrow the Constitution but to overthrow the men who pervert the Constitution." - Abraham Lincoln Last edited by WB9MCW; 07-23-2012 at 11:08 PM.

07-23-2012	#10
VetteMed Join Date: Mar 2009 Location: Orlando, FL Posts: 1,828	Re: Electrical Short. Plenty of batteries on the shelf at my local Wally World. __________________ 2004 Z06/Z16 LeMans Commemorative Edition 1991 ZR-1 #302 White/Gray (sold) 1991 ZR-1 #1147 Red/Saddle (sold)