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02-10-2011, 07:28 AM
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Senior Club Cobra Member
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Join Date: Jul 2002
Cobra Make, Engine:
Posts: 15,712
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Not Ranked
Years ago I used the 12 volt positive connection on the COIL and the other lead to ground. That works on standard ignition systems. It does NOT work with MSD ignition. Turns out the MSD can supply as much as four hundred volts to the plus side of the coil. Blew out the timing light in a heart beat....  |
02-10-2011, 11:46 AM
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CC Member
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Join Date: Apr 2009
Location: Little Rock area,
AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
Posts: 4,533
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Not Ranked
Quote:
Originally Posted by Excaliber
Years ago I used the 12 volt positive connection on the COIL and the other lead to ground. That works on standard ignition systems. It does NOT work with MSD ignition. Turns out the MSD can supply as much as four hundred volts to the plus side of the coil. Blew out the timing light in a heart beat.... |
Now that you mention the coil I think that may be what I use to do with my old Trans Am with a trunk mounted battery. Hooked it up to the coil and ground like a dwell meter. Should of remembered that. |
02-10-2011, 02:31 PM
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CC Member
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Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
Posts: 3,409
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Not Ranked
Consider for a moment...What range of voltages come off the alternators hot lead, especially if you connect the timing light between the alternator and the voltage regulator. Be sure your timing light can handle the higher voltage...Since most newer timing light are multi-purpose tools they should be ok. But the older - single purpose timing lights my get toasted...
__________________
Wiring Diagrams: SPF MKII, MKIII, GT40, CSX7000, CSX8000, Corvette Grand Sport, and Shelby Sebring, Bondurant & Cinema Tribute Cars.
Owner’s Manuals: SPF MKII, CSX7000, CSX8000, Sebring, Bondurant, Cinema Tribute Cars $ GT40’s..
Large, easy to read and trace schematics with part numbers, wire colors, wire gauge, fuses, and electrical upgrade information. Trouble-shooting and replacement part numbers for those roadside repair adventures.
SPFWiringDiagrams@Comcast.net
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02-10-2011, 04:50 PM
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CC Member
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Join Date: Oct 2006
Location: Huntsville,
AL
Cobra Make, Engine: SOLD-SPO2660, Southern Automotive 406FE, TKO-600
Posts: 65
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Not Ranked
Any one have personal experience with the MSD AA battery powered unit? Specs says it's good to 5000rpm. I'm in the market for a timing light, this one would eliminate concern of where to pick up power.
Thanks!
__________________
Joe
Have fun and enjoy life, because when it is over, it is too late!
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02-10-2011, 05:07 PM
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Senior Club Cobra Member
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Join Date: Jun 2007
Location: Covington,
wa
Cobra Make, Engine: Superformance # 532, 466 BB, 560HP
Posts: 3,031
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Not Ranked
Quote:
Originally Posted by JST4FUN
Any one have personal experience with the MSD AA battery powered unit? Specs says it's good to 5000rpm. I'm in the market for a timing light, this one would eliminate concern of where to pick up power.
Thanks!
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I have one and it works great.
I just make sure to always remove the batteries when I'm done using it.
__________________
John Hall
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02-10-2011, 06:49 PM
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CC Member
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Join Date: Oct 2006
Location: Huntsville,
AL
Cobra Make, Engine: SOLD-SPO2660, Southern Automotive 406FE, TKO-600
Posts: 65
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Not Ranked
Quote:
Originally Posted by Silverback51
I have one and it works great.
I just make sure to always remove the batteries when I'm done using it.
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John, thanks, think I'll go that way! Seems simple enough.......!!
__________________
Joe
Have fun and enjoy life, because when it is over, it is too late!
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02-10-2011, 07:44 PM
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CC Member
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Join Date: Jan 2008
Location: Williamsport,
PA
Cobra Make, Engine: Kellison Stallion 468 FE
Posts: 2,703
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Not Ranked
Quote:
Originally Posted by JST4FUN
Any one have personal experience with the MSD AA battery powered unit? Specs says it's good to 5000rpm. I'm in the market for a timing light, this one would eliminate concern of where to pick up power.
Thanks!
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i had borrowed one used it twice on my car before i put in the fuse block under the hood, i liked it, it had some extra features to it which are explained on MSD's web site. they are a little expensive i thought for a timing light.
i like my old 70's Sun light, but if it every craps out i might get one. the one lead hook up is nice because i don't have to be so careful around the headers only one wire dangling to worry about
__________________
Fred B
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