Ballast Resistor ? - Vintage Mustang Forums
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post #1 of 3 (permalink) Old 03-10-2005, 10:54 PM Thread Starter
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Hey All, Im putting an Unilite Mallory distributer in my 302,I did a voltage check on the neg side of the coil while engine was at idle and got 12 volts so I guess my factory resistor wire is non exsistant this was with my old dual point Mallory distributer installed, I have a ballast resistor in a box of parts that came with the car that I hooked up and got it down to 10 volts but from what I have read in the search I should read between 7 and 9 volts to be safe. What should I ask for when I go to get one at the parts store? Not sure how much resistance mine is rated at? Thanks Dave.
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post #2 of 3 (permalink) Old 03-11-2005, 09:45 AM
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Default sells the mallory ballast resistor maa-700. Your resister wire could be still there but not hooked up. I just installed the unilite with their coil and filter, simple installation but my resistor wire was intact.

Estimated Ship Date: Today
Brand: Mallory
Product Line: Mallory Ignition Coil Ballast Resistors
Resistance: 0.75-1.5 ohms
Quantity: Sold individually.

Protect your ignition from burnout.

Ballast Resistor, 0.75-1.5 Ohms, Variable Resistance, Each

These Mallory heavy-duty porcelain resistors feature a 0.75-1.50 ohm and a 200-watt rating, and use threaded terminal connections for better wire retention. They are available for most standard point-type or electronic ignitions. The resistors have variable resistance values for improved cold weather starting

pasted from their site

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post #3 of 3 (permalink) Old 03-11-2005, 01:09 PM
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I installed a mallory unilite in my 68 302 car. I was hoping to be able to throw 12v to the system but was'nt sure so I called the tech support guys at mallory (actually it's mr gasket). For the model distributor and coil (for electronic ingnition) that I had (both mallory), the tech guy told me ideally I needed 12v to the coil and 7-10v from coil to distributor (never heard of resisting the wire between coil and distributor). I picked up a ballast resistor from my local NAPA store and am measuring 8v to the distributor. The tech guy also informed me that some of their distributors would handle a full 12v. You might check with them before you do anything.

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