dsII ballast resistor
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dsII ballast resistor
I have a 83 f150 302 tha needs the resistor wire. I have searched, but cannot find one or a replacement. truck runs fine with 12v straight to coil.
Is this bad for other components? If so will a dodge ballast work or what should I do? Thanks for any advise!
Is this bad for other components? If so will a dodge ballast work or what should I do? Thanks for any advise!
Post Fiend
Joined: Jul 2004
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From: Northern California
Go to Ford dealer parts department and ask them for a balast resistor, or go to your local autopart stores and get one from them. Explain to them what it does if they don't understand.
Running the full 12V to the coil will burn it up eventually.
Running the full 12V to the coil will burn it up eventually.
Post Fiend
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From: Northern California
Fits 1977-1986 F-series, Bronco, Econoline with DS-II.
These trucks and vans also had this resistor with EFI in the wiring But it wasn't used.
Wrecking Yard should also have it also. Just cut it right at the splices at both ends. Do not make it any shorter.
Places like Napa auto should also have it. But may have to order it.
Fuse links and ballast resistors are unknown to most parts people anymore, but someone should carry it.
These trucks and vans also had this resistor with EFI in the wiring But it wasn't used.
Wrecking Yard should also have it also. Just cut it right at the splices at both ends. Do not make it any shorter.
Places like Napa auto should also have it. But may have to order it.
Fuse links and ballast resistors are unknown to most parts people anymore, but someone should carry it.
Elder User
Joined: Jun 2009
Posts: 907
Likes: 6
From: nw pa.
Fits F-series, Bronco, Econoline with DS-II.
These trucks and vans also had this resistor with EFI in the wiring But it wasn't used.
Wrecking Yard should also have it also. Just cut it right at the splices at both ends. Do not make it any shorter.
Places like Napa auto should also have it. But may have to order it.
Fuse links and ballast resistors are unknown to most parts people anymore, but someone should carry it.
These trucks and vans also had this resistor with EFI in the wiring But it wasn't used.
Wrecking Yard should also have it also. Just cut it right at the splices at both ends. Do not make it any shorter.
Places like Napa auto should also have it. But may have to order it.
Fuse links and ballast resistors are unknown to most parts people anymore, but someone should carry it.
what color is the wire on efi harness...
I'm going to carbed mtr ...
ty
Post Fiend
Joined: Jul 2004
Posts: 8,786
Likes: 28
From: Northern California
It's Red/Light green. You should already have the DS-II power plug in the main harness in the engine compartment.
This is because the ballast resistor is in the main harness.
What you should be able to do is get a DS-II engine harness, unplug your TFI-IV harness and plug the new DS-II harness in it's place. Lariat 1985 has already done this swap with great success. Although he had a carbed motor, he still had TFI-IV, EEC-IV like you have.
Hope this helps...
This is because the ballast resistor is in the main harness.
What you should be able to do is get a DS-II engine harness, unplug your TFI-IV harness and plug the new DS-II harness in it's place. Lariat 1985 has already done this swap with great success. Although he had a carbed motor, he still had TFI-IV, EEC-IV like you have.
Hope this helps...
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Post Fiend
Joined: Jul 2004
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From: Northern California
The ballast resistor for a points vehicle has a different resistance and ohm factor than the one with DS-II. I do not know how much that matters, but from my service books there is a difference to them.
The spark is also weaker with the points system and requires different spark plugs and gap, (closer gap) than the DS-II/EFI systems. So the adjustments on the current emissions lable wouldn't work well for you. Use the adjustment settings and spark plug gap for a 1973 302 for example for best results.
DS-II is more reliable than points/Condenser systems in my opinion, but that's just an opinion.
The spark is also weaker with the points system and requires different spark plugs and gap, (closer gap) than the DS-II/EFI systems. So the adjustments on the current emissions lable wouldn't work well for you. Use the adjustment settings and spark plug gap for a 1973 302 for example for best results.
DS-II is more reliable than points/Condenser systems in my opinion, but that's just an opinion.
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Thanks guys I found my problems. Sometime before someone else cut the tape off the harness, and guess what. There were at least 8 slices in the resistor wire alone! It overheated and melted a few with it.
The first factory splice is near the module and the other end is behind the instrument cluster upper left hand corner. Not a simple cut and splice.
I used the AC Delco #C1101 resistor and mounted it on the left fender tab under the hood hinge.
It's not perfect, there is 9.5v at the coil, but accel makes an adjustable resistor that should do the job better. That will be for when I have more time.
THANK YOU 81-F-150-Explorer !!
The first factory splice is near the module and the other end is behind the instrument cluster upper left hand corner. Not a simple cut and splice.
I used the AC Delco #C1101 resistor and mounted it on the left fender tab under the hood hinge.
It's not perfect, there is 9.5v at the coil, but accel makes an adjustable resistor that should do the job better. That will be for when I have more time.
THANK YOU 81-F-150-Explorer !!
Post Fiend
Joined: Jul 2004
Posts: 8,786
Likes: 28
From: Northern California
THANK YOU 81-F-150-Explorer !!
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