duraspark module 1974

[TheLimeRanger]

so the part number on the module that's in the bronco ends in A1A. it has 2 plugs, one has 4 wires, the other has 3. I had a spare that i purchased years ago (turns out its not the right one) and it ends in A2D. it has 4 wires on 1 plug and 2 wires on the other. i swapped them out and it doesnt work. I cant find another one that ends in A1A, however i found one that ends in A2A. It appears to have the correct number of wires. does anyone know if they are compatable?

my other option would be to do an HEI mod, or switch to an aftermarket setup altogether. im trying to keep it as stock as possible though

thx

 

[75MIKE]

Do they both have the black plastic grommet where the wires exit the module?

 

[TheLimeRanger]

they do, but the replacement is different, it has 1 less wire, which must do something important lol. it will not run with it attached. i hooked up the original and it will still run with it. the original started to run rough and puked its guts all over my inner fender

 

[75MIKE]

https://www.amazon.com/Standard-Ignit-ion-LX200-Module/dp/B000CPK1DY

This is the one BG shows works on the '74. I went through Ebay and wrecking yards to get genuine Motorcraft modules.

 

[Scot]

I am not sure that it will apply to a 1974 Bronco, but, I have a 1975 F100. To use a 1976 Duraspark II module, I had to swap the Black-Green wire with the Purple-Blue wire. I made the change to the trucks wiring harness but you could also change the module harness.

This is the info I used:
https://www.ford-trucks.com/forums/1358800-duraspark.html
(See post #3)

Hope this helps?

 

[Rustytruck]

the 1974 module has a redundant ground in the original harness. the aftermarket exploited that and removed/or rerouted wiring to save a little cash. this was noted in the install paperwork on the replacement module I purchased.

 

[TheLimeRanger]

So you have the duraspark 1 in your 74 and it works with the blue grommet? Wow that goes against everything I've read! If that's the case then I'm in business

 

[FordBronc]

AFAIK
Ignition modules, 74 (black grommet) and 75 (green grommet) are year specific and will not interchange. 76 to 79 (blue grommet) are interchangeable.
Ignition modules: 1974 is 1974 ONLY / 1975 is 1975 ONLY.
Blue module introduced in 1976 was used well into the 1990's.
D4AZ-12A199-C 1974 only

DuraSpark ignition modules identified by a colored plastic insert located above where the wires feed out. 2 others: One has a red plastic insert, the other has a yellow or brown plastic insert. Red module is D7AZ-12A199-A used in some CA vehicles ONLY.

D9AZ-12A199-C (replaced D8AZ-12A199-A). One of these modules is yellow, one is brown
These modules were used in 1978/79 302 & 351M/W vehicles sold in high altitudes only. 351W: Passenger Cars & Econolines only.
1U2Z-12A199-AA (replaced D6AZ-12A199-B - D7AZ-12A199-B - D8VZ-12A199-A - D9VZ-12A199-A)

Ignition Module - blue insert (Motorcraft DY-893) / Available from Ford.
Myriad 1976/90's FoMoCo vehicles.
Green Sales in OH.
Collectors Auto Supply in WA.
Haven Ford in KS.
Klimesh Motor Sales in IA.
Bob Allen Ford in KS.
Freese Motor Inc in IA.
Wesley Obsolete Parts in KY.
Dennis Carpenter Ford in NC.

 

[TheLimeRanger]

Wow great info! I can tell you that not all '74 black modules are the same lol as I used one that didn't work in mine. Now the skeptic could say it as broken but I'm not convinced. My module ended in A1A and the replacement ended in A2D. Interestingly the replacement modules available (cheap garbage) list both of those numbers for the same part. This is starting to get interesting lol

 

[FordBronc]

Well I know that info is more related to 73-79 Ford trucks, but I though it might at least be helpful. When I converted my 71 Bronco from points to electronic ignition, I used a blue grommet 1979 Duraspark II module and a 1979 Distributor.

Wiring it was easy, with just 3 connections and done. I would tell you the color matching, but I am not by the Bronco at the moment and can not remember off the top of my fading memory.

But in a couple of days I will back to it and let you know.

 

[TheLimeRanger]

Well I know that info is more related to 73-79 Ford trucks, but I though it might at least be helpful. When I converted my 71 Bronco from points to electronic ignition, I used a blue grommet 1979 Duraspark II module and a 1979 Distributor.

Wiring it was easy, with just 3 connections and done. I would tell you the color matching, but I am not by the Bronco at the moment and can not remember off the top of my fading memory.

But in a couple of days I will back to it and let you know.

This is good info. I'd like to know more about about the duraspark II conversion you did

 

[FordBronc]

My old school truck working on buddy said "get these parts XX" and bam it was done. I had the dizzy loose, went in the shop to grab a tool.

When I got back he had the old one out, the new one in and then he made a couple of elec connections. And said "turn it over", when I did he ear timed it and locked it down. Starts like a champ.

Old school mechanic guys rock. I got a package deal on all the stuff in the pic at a swap meet. $25.00.

Like I said when I get back to the house I can post up the wiring connections he made.

 

[chrlsful]

I don't know the bronk module but the blue strain relief is the one used around here as a better product for performance (pep'n MPGs) AND w/DSII system. (DSI has smaller cap on dizzy).
The above was worried bout 'not lookin original' - replacing a non-blue strain relief w/an hei 4 pin is pretty unobtrusive (even to the experienced eye) can be hidden, can easily havea spare, is cheeper/more redily available and is profiled by gofastforless on line (the wiring). Good on ya mate, got the NOS/obsoletes listed too. Reminds me of numbers dummy on FTE~
(BTW: never saw the blk plastic 'box' pictured & dizzy is mislabeled "HEI" as that one is newer & worthless & has that hitop on it. Get that pictured - a DSII dizzy (match up w/correct coil).

 

[FordBronc]

Well you gotta know that the INFO is all from Number Dummy off FTE. Cause that guy is the parts # GURU.

 

[Ovalis]

I wouldn't worry too much about the what the part # ends in on your module. You just need the black module to be correct for your 74. That being said, you can & I do run the BLUE module in my 74 for the last 10 years with no issues. You just need to make adapter wiring to plug in between the blue module & your existing plugs. If you look at the schematics for the black & blue ignition modules it shows you exactly what each wire is used for. Ford changed the terminal locations (a little bit) and indexed the connectors so you couldn't accidentally plug in the wrong module (black, green, or blue) into the wrong year car. You can buy spare connectors at Napa and make your own harness. Just look at the wires coming out of your firewall and also from your distributor, find out what position it needs to go to on the ignition module and connect it the right terminal on the new connectors. All you're doing is rerouting the wires to plug into the correct position on the blue module. The nice thing is you're not cutting up your existing wires at all. After I restore my bronco, I will be going back to using the black module and all I have to do is unplug my adapter harness, get rid of it and plug the black module back in.

 

[Master Chief]

40 bucks through Rock Auto ... https://www.rockauto.com/en/moreinf...ZJR80GoZA/pPXHTSLDfoj61QZYLKR8+EKEb1SLuqAlLo=

 

[73azbronco]

Keep your duraspark dizzy, get an MSD AL6, they sell an adapter to make it plug and play, and most auto parts stores sell AL6's, or at least local Oreillys has a few on the shelf. Went through two motorcraft clone durasparks before I gave up.