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How do you eliminate ballast resistor with MSD #475765 09/21/09 08:08 PM 09/21/09 08:08 PM
Joined: Apr 2009 Posts: 169 Nazareth,Pa. J JACKSON OP member
JACKSON OP member J Joined: Apr 2009 Posts: 169 Nazareth,Pa.	i just installed a east coast mini 1 wire alternator, ran it directly to the cutoff switch. turn off switch car still runs. then i tried wire directly to the battery ,turned off kill switch, car still runs. i removed voltage regulator, car still runs with kill switch off. i tried to disconnect ballast resistor wires, car wont start,how do i eliminate the ballast resistor and still get the car to stay running ,then turn off kill switch and get the car to turn off. im thinking something is wired wrong from the MSD 7AL-2. im lost with electronics.

Re: How do you eliminate ballast resistor with MSD [Re: JACKSON] #475766 09/21/09 08:44 PM 09/21/09 08:44 PM
Joined: Apr 2009 Posts: 169 Nazareth,Pa. J JACKSON OP member
JACKSON OP member J Joined: Apr 2009 Posts: 169 Nazareth,Pa.	anyone, i want to fix this POS tonight.

Re: How do you eliminate ballast resistor with MSD [Re: JACKSON] #475767 09/21/09 08:49 PM 09/21/09 08:49 PM
Joined: Jan 2003 Posts: 4,084 Indiana W5Duster436 master
W5Duster436 master Joined: Jan 2003 Posts: 4,084 Indiana	Sounds like you wired it to the wrong side of the kill switch? Seems like when I did it we wired it from the alt to the starter lug.

Re: How do you eliminate ballast resistor with MSD [Re: W5Duster436] #475768 09/21/09 08:55 PM 09/21/09 08:55 PM
Joined: Mar 2003 Posts: 15,491 the boonies aarcuda I Live Here
aarcuda I Live Here Joined: Mar 2003 Posts: 15,491 the boonies	Quote: Sounds like you wired it to the wrong side of the kill switch? Seems like when I did it we wired it from the alt to the starter lug. yup. alt wire goes to the battery side. if it goes to the other, the alt will always make power to run the ignition when the motors running

Re: How do you eliminate ballast resistor with MSD [Re: aarcuda] #475769 09/21/09 09:22 PM 09/21/09 09:22 PM
Joined: Apr 2009 Posts: 169 Nazareth,Pa. J JACKSON OP member
JACKSON OP member J Joined: Apr 2009 Posts: 169 Nazareth,Pa.	If i put a test light on the battery side, off side switch, the test light stays lit. are you saying to put the alt. wire on the off side of the kill switch. all the other wires are on the on side of the kill switch. also how do i eliminate the ballast resistor and get the car running?

Re: How do you eliminate ballast resistor with MSD [Re: JACKSON] #475770 09/21/09 09:30 PM 09/21/09 09:30 PM
Joined: Mar 2003 Posts: 15,491 the boonies aarcuda I Live Here
aarcuda I Live Here Joined: Mar 2003 Posts: 15,491 the boonies	Quote: If i put a test light on the battery side, off side switch, the test light stays lit. are you saying to put the alt. wire on the off side of the kill switch. all the other wires are on the on side of the kill switch. also how do i eliminate the ballast resistor and get the car running? yes. jump the wires going to the ballast resister with a piece of wire with two spade terminals on each end of the jumper wire

Re: How do you eliminate ballast resistor with MSD [Re: aarcuda] #475771 09/21/09 09:33 PM 09/21/09 09:33 PM
Joined: Apr 2009 Posts: 169 Nazareth,Pa. J JACKSON OP member
JACKSON OP member J Joined: Apr 2009 Posts: 169 Nazareth,Pa.	if i want to eliminate the ballast resistor and wires how do i do it? i want to clean up all the wires in the engine bay as well.

Re: How do you eliminate ballast resistor with MSD [Re: JACKSON] #475772 09/21/09 09:36 PM 09/21/09 09:36 PM
Joined: Mar 2003 Posts: 15,491 the boonies aarcuda I Live Here
aarcuda I Live Here Joined: Mar 2003 Posts: 15,491 the boonies	Quote: if i want to eliminate the ballast resistor and wires how do i do it? i want to clean up all the wires in the engine bay as well. take the wires off both sides of the ballast resistor. then connect those wires together (typically by using a jumper wires that has two spade terminals that plug into the wires female terminals)

Re: How do you eliminate ballast resistor with MSD [Re: JACKSON] #475773 09/21/09 09:48 PM 09/21/09 09:48 PM
Joined: Aug 2003 Posts: 43,252 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,252 Bend,OR USA	Cut the ends off of both wires and splice and solder them together, don't forget to put a piece of heat shrink on one wire long enough to cover the solder joint before you solder the two together, and far enough back from the solder so it won't shrink until you slide it over the joint and heat it up to cover the joint Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: How do you eliminate ballast resistor with MSD [Re: Cab_Burge] #475774 09/22/09 08:55 AM 09/22/09 08:55 AM
Joined: May 2008 Posts: 902 Mopar Lane,Mississippi 6 67HEMI super stock
67HEMI super stock 6 Joined: May 2008 Posts: 902 Mopar Lane,Mississippi	Both of our MSD's 7al and 6 al came with cables to go from ignition box to coil without resistor. '33 Plymouth 5 Window Coupe Blown Aluminum HEMI w/bolt ons (under construction) '69 Chrysler 300 Convertible 375 HP 440 '71 Plymouth Duster 360 W/EFI (Wife's Ride) '12 Ram MegaCab Dually 6.7 Cummins

Re: How do you eliminate ballast resistor with MSD [Re: Cab_Burge] #475775 09/22/09 08:58 AM 09/22/09 08:58 AM
Joined: Mar 2007 Posts: 825 LENOX , MI KMPX2 mopar addict
KMPX2 mopar addict Joined: Mar 2007 Posts: 825 LENOX , MI	Think of it this way the battery is a source of energy and the alt. is a source of energy so they both need to be on one side of the switch. Everything else needs to be on the other side of the switch

Re: How do you eliminate ballast resistor with MSD [Re: 67HEMI] #475776 09/22/09 09:10 AM 09/22/09 09:10 AM
Joined: May 2005 Posts: 6,446 NJ-USA H HPMike master
HPMike master H Joined: May 2005 Posts: 6,446 NJ-USA	Quote: Both of our MSD's 7al and 6 al came with cables to go from ignition box to coil without resistor. Yep. The MSD system should not share ANY of the original wiring from the vehicle. If you do you are welcoming problems. Make a harness from the box to the battery, the coil and the distributor. The only wire that should be remotely connected to the car is the 12V triger wire. I generally will pick up a switched power source from the ignition switch feed. MB

Re: How do you eliminate ballast resistor with MSD [Re: HPMike] #475777 09/22/09 11:53 AM 09/22/09 11:53 AM
Joined: Nov 2003 Posts: 4,027 Dearborn Hts, MI Sledge_57 master
Sledge_57 master Joined: Nov 2003 Posts: 4,027 Dearborn Hts, MI	Quote: ........ The only wire that should be remotely connected to the car is the 12V triger wire. I generally will pick up a switched power source from the ignition switch feed. MB Remember a lot of guys wire the red wire from the MSD unit to the 12v from the ignition switch at the ballast wiring which is why you have to tie the 2 together, 1 wire has 12 volts only when in the run position and the other has it only when cranking. If you use these wires and dont tie them together you'll either have it fire when cranking and die after cranking or it wont fire while cranking at all. I suspect this is the reason you couldn't get it to run after you messed with it. See diagram 5498594-6AL.jpg (980 downloads) Doug 1967 "Pedal Car" 500" low deck , TF 727, 4.30 Locker Best to Date: 11.67 @ 114.9 1.64 60ft "Kids in cars cause accidents. Accidents in cars cause kids..."

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