EZ-21 installation question
Thread Starter
|
Fleet Mechanic
Joined: Jan 2007
Posts: 1,847
Likes: 37
From: Eastern shore,Salisbur,MD
EZ-21 installation question
Hi Gang, Happy holidays
I am installing an EZ-21 and I have a question. The diagram they sent shows the dash Ign switch with two wires off of ign post. One is ing. sw ing. wire. The other is Ing sw coil.
In the fuse panel, the pink coil wire goes to the coil fuse, so it would appear that there would be battery on it from the fuse.
There would also be battery on it from the ign switch.
The real question is this: Could I just run that coil wire fight to the coil.
At this time I do not see any other wire that should go to the coil, other then that pink wire and it looks like it has two battery sources..
I am running the original type ing switch that appears to have the bat post, rad(acc), am which is the ing side of the switch.
I will be running my start circuit off of ign side of the switch.
Thanks for any help
I am installing an EZ-21 and I have a question. The diagram they sent shows the dash Ign switch with two wires off of ign post. One is ing. sw ing. wire. The other is Ing sw coil.
In the fuse panel, the pink coil wire goes to the coil fuse, so it would appear that there would be battery on it from the fuse.
There would also be battery on it from the ign switch.
The real question is this: Could I just run that coil wire fight to the coil.
At this time I do not see any other wire that should go to the coil, other then that pink wire and it looks like it has two battery sources..
I am running the original type ing switch that appears to have the bat post, rad(acc), am which is the ing side of the switch.
I will be running my start circuit off of ign side of the switch.
Thanks for any help
Junior User
Joined: Aug 2013
Posts: 88
Likes: 2
From: Columbia River Gorge
I have not got to this point on my truck but plan on buying this same kit.I would start by calling their customer service reps if you haven't done so already.I have heard they are pretty helpful from other threads that have ben posted.
Thread Starter
|
Fleet Mechanic
Joined: Jan 2007
Posts: 1,847
Likes: 37
From: Eastern shore,Salisbur,MD
Cruiser 456. Thanks I did call them on Wed., but they have not returned my call as of today. I'm proceeding to other areas of the wiring and will try and get with them next week
Roast em' if you got 'em
Joined: Mar 2005
Posts: 21,984
Likes: 9,838
From: Rio Rancho, NM
Jim,
I used the EZ Wiring 21 circuit harness in my truck. Its been several years since I installed it.
Keep in mind that its essentially a universal harness so there might be some wires that are not needed.
I think what you should do is figure out what wires you need for your application and then find them in the harness.
I take it you are using and original style starting/ignition system? If so you will need an output from the key switch that feeds the ignition system (usually to the ballast resistor and then on to the coil). For ignitions systems with a ballast resistor they will have a 12v bypass when the key is in the start position that feeds battery voltage straight to the coil bypassing the ballast resister to give you hotter spark when starting. I think that on Fords this comes from the starter solenoid and not from the ignition switch.
I think I still have the instruction packet that came with my harness. I'll see if I can find it and have a look at it and try and give you a better answer
Bobby
I used the EZ Wiring 21 circuit harness in my truck. Its been several years since I installed it.
Keep in mind that its essentially a universal harness so there might be some wires that are not needed.
I think what you should do is figure out what wires you need for your application and then find them in the harness.
I take it you are using and original style starting/ignition system? If so you will need an output from the key switch that feeds the ignition system (usually to the ballast resistor and then on to the coil). For ignitions systems with a ballast resistor they will have a 12v bypass when the key is in the start position that feeds battery voltage straight to the coil bypassing the ballast resister to give you hotter spark when starting. I think that on Fords this comes from the starter solenoid and not from the ignition switch.
I think I still have the instruction packet that came with my harness. I'll see if I can find it and have a look at it and try and give you a better answer
Bobby
Thread Starter
|
Fleet Mechanic
Joined: Jan 2007
Posts: 1,847
Likes: 37
From: Eastern shore,Salisbur,MD
Bobby, nice to hear from you. Hope you had a great holiday.
Yes, Bob, My start system is like the old, except that I am 12V Pos Gnd.
I am starting off with new everything.
I have already pulled out any wires that I am not using and am starting to run my wires, one circuit at a time. It is going pretty good.
I will be using my starter button. My real question is to run the coil wire directly from the coil fuse. or to the switch first, then to coil. If I run it from the switch, the coil will not have its own fuse.. All the rest I have pretty much figured out so far.
Enjoy the day
Thanks
EZ-21 is lacking on actual schematics and detailed lay out. But I have it down
Yes, Bob, My start system is like the old, except that I am 12V Pos Gnd.
I am starting off with new everything.
I have already pulled out any wires that I am not using and am starting to run my wires, one circuit at a time. It is going pretty good.
I will be using my starter button. My real question is to run the coil wire directly from the coil fuse. or to the switch first, then to coil. If I run it from the switch, the coil will not have its own fuse.. All the rest I have pretty much figured out so far.
Enjoy the day
Thanks
EZ-21 is lacking on actual schematics and detailed lay out. But I have it down
Lead Driver
Joined: Jul 2011
Posts: 6,599
Likes: 34
From: Rockingham, VA
Hey Jim, I've never heard of anyone leaving the system positive ground when converting to 12 volts. Why are you doing that? I think any 12 volt accessories you might add will need a negative ground.
Trending Topics
Roast em' if you got 'em
Joined: Mar 2005
Posts: 21,984
Likes: 9,838
From: Rio Rancho, NM
Jim,
Joe makes a good point, why "positive" ground?
I didn't get a chance to dig in the garage today...I got familied. I think I got them all safely on the road today so maybe tomorrow I can dig up my EZ Wiring packet.
I don't recall there being a fuse in the ignition circuit but then again, there's all sorts of things that I don't recall. I'll dig in the garage in the morning and find those schematics and try and see what you're up against.
Bobby
Joe makes a good point, why "positive" ground?
I didn't get a chance to dig in the garage today...I got familied. I think I got them all safely on the road today so maybe tomorrow I can dig up my EZ Wiring packet.
I don't recall there being a fuse in the ignition circuit but then again, there's all sorts of things that I don't recall. I'll dig in the garage in the morning and find those schematics and try and see what you're up against.
Bobby
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Thread Starter
|
Fleet Mechanic
Joined: Jan 2007
Posts: 1,847
Likes: 37
From: Eastern shore,Salisbur,MD
MY BAD. Typo. 12 v, Neg grnd. ( fat fingers) Working on the headlight circuit today. Coming along good.
Will post pics when complete. Along those lines, I need a good source for loom.
Thanks all
Will post pics when complete. Along those lines, I need a good source for loom.
Thanks all
Roast em' if you got 'em
Joined: Mar 2005
Posts: 21,984
Likes: 9,838
From: Rio Rancho, NM
Jim,
I used the standard old split loom, you can find it most anywhere in a variety of sizes.
When I wired up my truck I layed out and routed the harness and didn't make any terminations until I was completely satisfied, I'm glad I did it that way because I ended up rerouting the wiring in some areas 3 or 4 times to get it where I liked it. Once I was happy with the routing I then went back and made the final terminations.
I used standard but connectors and similar crimp on style ends but I'm not fond of the look of the look of the blue, yellow or red ends of them. I pushed the metal part out of the insulated pieces and then soldered them to the wires and covered them with heat sink for a nice clean look. Then I put split loom over everything.
Good luck
Bobby
I used the standard old split loom, you can find it most anywhere in a variety of sizes.
When I wired up my truck I layed out and routed the harness and didn't make any terminations until I was completely satisfied, I'm glad I did it that way because I ended up rerouting the wiring in some areas 3 or 4 times to get it where I liked it. Once I was happy with the routing I then went back and made the final terminations.
I used standard but connectors and similar crimp on style ends but I'm not fond of the look of the look of the blue, yellow or red ends of them. I pushed the metal part out of the insulated pieces and then soldered them to the wires and covered them with heat sink for a nice clean look. Then I put split loom over everything.
Good luck
Bobby
Welder User
Joined: Feb 2009
Posts: 5,269
Likes: 50
From: northwest MT
If you have a single coil wire(pink), it goes directly to the coil(or ballast resistor). It should already be tied into the ignition switch circuit before the fuse.
You can also test circuits with a 12v source and a test light if in doubt.
You can also test circuits with a 12v source and a test light if in doubt.
Thread Starter
|
Fleet Mechanic
Joined: Jan 2007
Posts: 1,847
Likes: 37
From: Eastern shore,Salisbur,MD
Thanks tinman. That is kind of what I thought. Thanks too Bobby and Jolly roger. Everyone have a great day. Kids are down from NY. I will resume work on truck next week.
Roast em' if you got 'em
Joined: Mar 2005
Posts: 21,984
Likes: 9,838
From: Rio Rancho, NM
I think the top picture might be the diagram you are referring to from EZ Wiring. I have no idea why they show 2 different wires coming from ignition switch, there should only be one.
I know the middle pic is labeled GM Standard ignition (points type) but they are all pretty much the same. The main differences between Ford, GM, and Mopar is how they handle the ballast resistor. Some use an actual ballast resistor while other companies use a resistive wire, either way the net effect is to chop the 12V feed to the coil approx. in half for normal running. There is typically a 12V bypass that feeds 12V to the coil when the ignition switch is in the Start position.
The third pic shows a typical points style ignition circuit.
Hope this helps some.
Bobby
I know the middle pic is labeled GM Standard ignition (points type) but they are all pretty much the same. The main differences between Ford, GM, and Mopar is how they handle the ballast resistor. Some use an actual ballast resistor while other companies use a resistive wire, either way the net effect is to chop the 12V feed to the coil approx. in half for normal running. There is typically a 12V bypass that feeds 12V to the coil when the ignition switch is in the Start position.
The third pic shows a typical points style ignition circuit.
Hope this helps some.
Bobby
Thread
Thread Starter
Forum
Replies
Last Post
bunchoftrucks
1961 - 1966 F-100 & Larger F-Series Trucks
4
Mar 9, 2018 03:35 AM
300I6VAN85
Ford Inline Six, 200, 250, 4.9L / 300
6
Apr 2, 2006 07:12 PM
brider
1961 - 1966 F-100 & Larger F-Series Trucks
16
Jun 8, 2005 07:07 PM