Electronic ignition conversion

[troy.70R/T]

I am sure this question has been asked a million times so I hate to ask again but could sure use the help.
     I have a 70 charger 440 4-speed that is rstored to mostly stock specs. I want to convert it to electronic ignition. Here are my questions.
1. Which ECU box do I use?  the chrome one, I am told it is good to 8,000rpm. My car will never see 8,000 5,000 at the most.
2.  Which is the best ballist resistor to use? 2 or 4 prong? I am told they have diffrent levels of resistanc? is that true?
3.   Will the stock voltage regulator work?
4.    forgot to ask how many prong Ecu do I use 4 or 5 prong?
5.    Now for the difficult question. I have a new wiring harness for for the ECU and a new engine wiring harness.  I don't want to cut it in the worng places. I have a couple of pics that are not very good but maybe someone can tell me where to cut and splice the wires together. Also if any one is 100 percent sure how to do this I would be willing to ship the harnesses  to you and pay you for it. It would not need to look nice just roughly splice the wires together and I would redo it when I got it back. Thanks Troy

[Nacho-RT74]

-1:Orange are the most used for HP street.. I will use chrome what I think by now is more than I really need. But will see later. Probably somebody else will let you know better.

-2 and 4: 4 prongs is matched to work with 5 pins ECU what was the original setup when they were invented, since ECU was feeded beside the ignition switch direct source also with the thermical ballast source. 2 prongs with 4 pìns ECU  were newers versions where the secondary source is internal. You can use a 4 prongs ballast with 5 or 4 ECU modules but 2 prongs ballast just with 4 pins. Lower resistance ballast around were mostly used on points system I think.

-3: electronic ? yes but since 73 ( and some 72s equipped ) where diff PN. Probably there is an internal upgrade on electronic ignition cars Regulators.

-5: would be great to help to you on upgrade the harness but you won't shipp to Venezuela LOL. Only place you need to splice is the Blue wire before the ballast. There is ALREADY a splice point there and you can sold the wire there for totally stock look. However you can use the femnale terminal blue wire at ballast to splice there, or even regulator blue wire. On ballast you would need just cut the old ballast terminal, and attach both wires on same place with new terminal. Rest of wires juts run up to the right places ( coil and dist ) and tape together with old engine harness.

Thats for 4 pins ECU modules what are the available harnesses and upgrades.

5 pins harness and system would use the extra green traced red wire to the secondary resistance of 4 prongs ballast. Is just attach a terminal and plug on ballast. No splice there. 4 pins doesn't use this wire, so you can just hide down the harness tape arriving anywhere.

[troy.70R/T]

Thanks for the help. I can figure it out now. thanks again Troy.

[troy.70R/T]

I would also like to add that I found out you can order wiring harnesses for your specific conversion application through Bill and Rose Evans.   http://evanswiring.tripod.com     Phone #  (814)-864-2622       For my 70 charger 440 the wiring harness cost was 113.00 and that included shipping. This has the ECU plug already wired into it, all you have to do is plug stuff in.  If I screw mine up I know where to order one.

[davidlclassic]

I used an ignitor electronic ignition conversion kit from petronix, it just fits in the stock distributor, so far mine has worked great. I bought it through jegs for around $70.00 bucks.