MSD 6AL

[Jesco]

Hi,
I am going to mount my new ignition box (MSD 6AL ) in the glove box. Now I thinking about run the heavy red/positve battery cable from the box to the ammeter for positive feed. Anyone know if that will give the box enouge power?

More tip how to run as few cables as possible to the engine compartment. Can I take the ground from the body, same as the gauges?

[Nacho-RT74]

you'll get same power on any part of the battery/charging line. Attach the heavy wire to ammeter studs ( black or red ) is the same than attach to starter stud relay or alt stud. AS FAR you properlly tight the nuts.

what I can't understand is WHY they advice attach to the batt ( red side ) and not to the alt if is the same line and you'll get practically SAME power thorught the line. Attaching on batt side will give you a wrong read on ammeter.


-You need to be alert about bulkhead conditions thought!


-Ground.. yes, from the body.

[Jesco]

Cool, No problem - the bulkhead and the wiring harness is new... The wake up signal, thin red on the box must have power on both start- and run position or? Thinking to run direct on the ignition key.

Would be the the easiest to run it to the ballast (wich a dont need - I know). There I have both run and start position at one cabel shoe (blue and brown wire).

[Nacho-RT74]

need to hook on both brown and blue wires coming from ign, or splicing from ballast once ballast is eliminated, there is not other way to get signal on both switch position. There is not a single wire able to feed on both positions since each one is cut at different moment.

Anyway, wait for another opinions about the heavier wire to attach to ammeter. Thats is simply my opinion, and I'm running parallel wires to the charging system

[John_Kunkel]

I wouldn't run the heavy red MSD wire to any source other than directly to the battery cable, even a brand new bulkhead connector can be overloaded; that's why they melt.

[Charger-Bodie]

I ran the heavy red wire for my msd6al to the starter relay on the allways hot side.

[Nacho-RT74]

I wouldn't run the heavy red MSD wire to any source other than directly to the battery cable, even a brand new bulkhead connector can be overloaded; that's why they melt.

if alt is charging and feeding, then power will be coming from alt, so will be feeded throught original wires AND AMMETER to suply the power that msd needs and the power lost by the batt... we would be on more less same deal.

the melting stuff is not simply like that about the overload, there is more about, what of course does have to do with overload, but not that simply
http://www.dodgecharger.com/forum/index.php/topic,33574.0.html

[Jesco]

I have a MSD 6A installed today. I run it to the starter relay to - and that works fine. Just investigate the possebilitys to avoid run so many cables through the firewall when I install the new box in the coupé.

[John_Kunkel]

I wouldn't run the heavy red MSD wire to any source other than directly to the battery cable, even a brand new bulkhead connector can be overloaded; that's why they melt.

if alt is charging and feeding, then power will be coming from alt, so will be feeded throught original wires AND AMMETER to suply the power that msd needs and the power lost by the batt... we would be on more less same deal.

Sorry, but if the MSD is powered from either ammeter stud the extra current required still runs through the bulkhead connector regardless of whether the source is the battery or the alternator.

Better to punch a separate hole through the firewall, install a grommet and power the MSD from the BAT terminal on the starter relay or better yet directly from the battery cable on the starter.