Duraspark II Conversion - How To
Freshman User
Joined: Mar 2007
Posts: 27
Likes: 0
duraspark conversion
Did my EEC to DS2 conversion yesterday.
It is truly plug and play.
Got my harness from a 1980 f150 with a 302.
I only needed the harness and ICM as I already had the distributor and a coil.
I saw rock auto has repair connectors if anyone needs to repair a harness and the coils and ICM's are cheap there too.
My truck is a 1984 300 6 with a c5 automatic an 8.8 with 3.55 gears
It is truly plug and play.
Got my harness from a 1980 f150 with a 302.
I only needed the harness and ICM as I already had the distributor and a coil.
I saw rock auto has repair connectors if anyone needs to repair a harness and the coils and ICM's are cheap there too.
My truck is a 1984 300 6 with a c5 automatic an 8.8 with 3.55 gears
New User
Joined: Dec 2014
Posts: 10
Likes: 0
From: Urbana, OH
Low voltage to the coil
I finished up my DSII conversion in the spring and it has been running great all summer, but recently I found that the ignition coil has only been getting 4 volts instead of the 9 volts it should have. It still runs good but the only reason I noticed is because my electric choke hasn't been opening all the way (I wired the choke from the coil feed just like I had it with the TFI system). I'm thinking it has something to do with the resistor wire. My question is could the resistor be bad and causing a higher resistance in the circuit? Or maybe something wrong with the ignition switch?
Thanks for any advice!
Thanks for any advice!
Moderator
Joined: Dec 2007
Posts: 7,987
Likes: 104
From: Boise, Idaho
Try unplugging the choke and see if the voltage changes.
Senior User
Joined: Sep 2006
Posts: 279
Likes: 0
From: LaFollette Tn
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Cargo Master
Joined: Mar 2008
Posts: 2,589
Likes: 212
From: Washington
Moderator
Joined: Dec 2007
Posts: 7,987
Likes: 104
From: Boise, Idaho
When you're in the junk yard, look for a pre-84 truck. It'll be on the driver's side and connects the distributor, ignition module (bolts to the wheel well (80 - 83) or the fender (pre-80)), and the coil. Two wires also go to the temperature sensor and oil pressure sensor. Not much else in that area so you can't miss it. 
New User
Joined: Dec 2015
Posts: 11
Likes: 0
I haven't looked at a junk yard yet but i was curious if it would be safe to use something new like this:
Davis Unified Ignition Ford Duraspark Distributors 66720 - Free Shipping on Orders Over $99 at Summit Racing
I would get a new module too.
I like the idea of something new and possibly having the recurve for the economy. Any ideas on better models since i'd like to buy new?
Davis Unified Ignition Ford Duraspark Distributors 66720 - Free Shipping on Orders Over $99 at Summit Racing
I would get a new module too.
I like the idea of something new and possibly having the recurve for the economy. Any ideas on better models since i'd like to buy new?
New User
Joined: Apr 2016
Posts: 7
Likes: 0
Pictures
I just finished doing this conversion on my 1986 F150 300 I6
and it was something i had been wanting to do for awhile.
I searched and read trying to get all the info to do it. Then I found your post and just let me say thank you for the detail and pics of how to get this done. It went very well and the truck is running great Thanks !!
and it was something i had been wanting to do for awhile.
I searched and read trying to get all the info to do it. Then I found your post and just let me say thank you for the detail and pics of how to get this done. It went very well and the truck is running great Thanks !!