Mallory EI and ballast resistor

[Mike D]

What does the ballast resistor do if I run a Mallory EI. Is it still needed?

 

[69hemibeep]

Ballast resistor drops the voltage down so you don't overheat things like the coil. If it calls for one use it, some don't like HEI but I'm not famialiar with what you have.

 

[jww69rrpost]

The ballast resister you are referring to is part of the original stock electrical system where gobs of amps were passed through the amp gauge and would typically be the culprit for under dash fires. Most of us who have significantly upgraded our electronics, including the addition of a volt gauge rather than the amp gauge, no longer need a ballast resister.

 

[Mike D]

The ballast resister you are referring to is part of the original stock electrical system where gobs of amps were passed through the amp gauge and would typically be the culprit for under dash fires. Most of us who have significantly upgraded our electronics, including the addition of a volt gauge rather than the amp gauge, no longer need a ballast resister.

What’s done with wires if no longer used?

 

[69hemibeep]

The ballast resister you are referring to is part of the original stock electrical system where gobs of amps were passed through the amp gauge and would typically be the culprit for under dash fires. Most of us who have significantly upgraded our electronics, including the addition of a volt gauge rather than the amp gauge, no longer need a ballast resister.

Hes talking ignition ballast which drops the voltage to the coil not the dash voltage limiter

MN1132 - 1962-72 Mopar oem-Style Ignition Ballast Resistor

Factory style replacement Ballast Resistor for 1962-72 Mopar models. This replacement is designed to look, install and function as close to original as possible.

www.classicindustries.com

MB2000B - 1965-74 AMC, Dodge, Plymouth; Gauge Cluster Voltage Limiter; Various Applications

This replacement voltage limiter is designed to provide a 5-volt supply and circuit protection up to 18-volts. This limiter will work with reproduction gauges, as well as factory gauges, and it's required when using reproduction gauges in order for them to work properly.

www.classicindustries.com

 

[Russ69Runner]

Bolt the lead's together is what I have been told. Use a voltage meter instead.

 

[Mike D]

Yes to the coil it’s an Msd blaster2, msd 6 amp ignition control and msd pro billet distributor.

 

[Mike D]

Thanks everybody. Great info.

 

[quikbird]

Should be a diagram in the instruction manual for the msd box on where to connect all the wires.

 

[jww69rrpost]

What’s done with wires if no longer used?

When I redid everything on my 69 Road Runner, it included a complete re-wiring of the entire electrical system (front to back, engine bay and under dash). The shop where the build took place said because it was a complete renovation and upgraded system, everything had changed.

 

[69hemibeep]

If the ballast is not needed put the wires together or as I just did on a car to keep the stock look I took the resister out of the back of the block and put a heavy copper wire in place and plugged the wires back in.

 

[ACME A12]

If the ballast is not needed put the wires together or as I just did on a car to keep the stock look I took the resister out of the back of the block and put a heavy copper wire in place and plugged the wires back in.

Exactly what I did on my green Duster. MSD Pro Billet Ready-to-Run distributor. Underhood wiring looks pretty much original but there are 12+ volts going to the distributor.