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Old 12-30-2011, 07:35 PM   #1
landarts
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Ez-Wiring help with ignition hook-up

I have the mini-21 EZ-Wiring kit that I am trying to hookup. I did do several searches and found some good pointers. I am having trouble with the ignition switch hook-up. I do have a HEi distributor installed. This is for a 72 with a 350 V8.

In the kit it has the following wires marked and their colors:
  • Ign Switch power - Red with black pigtail coming off the side
  • Ign Switch start - purple
  • Ign Switch coil - pink
  • Ign Switch ACC - orange
  • Ign Switch IGN - brown

On the back of the switch it has the following post:
  • Acc
  • Sol
  • Ign
  • Bat
  • G-1
  • G-2
Im a little or maybe a lot confused on getting this right. Here is what I think from the schematic:
  • Acc gets the orange wire marked "Ign switch ACC"
  • Bat gets the red wire marked "ign switch power"
  • Ign gets the brown wire marked "Ign switch Ign"
  • Not sure on the (purple wire marked "Ign switch start" and the pink wire marked " Ign switch coil" )

If I am good on the first three, where do I put the purple and pink wires ? Also what do I do with the black pigtail coming off of the red power wire?
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Fix and Sale 72 GMC 3/4 ton 4x4 K2500

The "Fixrupr" build thread

Oh yeah I forgot to mention I have a problem collecting these trucks, as for now I have 6 trucks.

72 Cheyenne 1/2 ton " FIXRUPR "
67 C20 - now daily driver
72 3/4 Ton GMC 4x4
71 Blazer - SOLD
67 C20 - parts truck formerly known as the " Chicken Dinner"
67 1/2 ton 4x4 short step side - will be a long term project
72 1/2 ton 4x4 - SOLD
70 CST daily driver - SOLD
72 suburban - possible for a 4 door crew cab truck - SOLD
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Old 12-30-2011, 08:06 PM   #2
fixit-p
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Re: Ez-Wiring help with ignition hook-up

Is this what you have?


You are correct.
Ign Switch power - Red with black pigtail coming off the side Bat
Ign Switch start - purple =Sol
Ign Switch coil - pink =Ign
Ign Switch ACC - orange =Acc
Ign Switch IGN - brown =Ign
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Old 12-30-2011, 08:28 PM   #3
landarts
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Re: Ez-Wiring help with ignition hook-up

This is the type of ignition - stock in the 1972
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Fix and Sale 72 GMC 3/4 ton 4x4 K2500

The "Fixrupr" build thread

Oh yeah I forgot to mention I have a problem collecting these trucks, as for now I have 6 trucks.

72 Cheyenne 1/2 ton " FIXRUPR "
67 C20 - now daily driver
72 3/4 Ton GMC 4x4
71 Blazer - SOLD
67 C20 - parts truck formerly known as the " Chicken Dinner"
67 1/2 ton 4x4 short step side - will be a long term project
72 1/2 ton 4x4 - SOLD
70 CST daily driver - SOLD
72 suburban - possible for a 4 door crew cab truck - SOLD
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Old 12-30-2011, 08:45 PM   #4
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Re: Ez-Wiring help with ignition hook-up

the switch you posted is correct for a 72 the diagram I posted is the generic ezwiring diagram, your connector should look like this.



The brown and green wires on the right are the G1 and G2 terminals the brown ignition wire is one on the left.
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Old 05-19-2012, 01:14 AM   #5
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Re: Ez-Wiring help with ignition hook-up

I know this post is old but I am in the process of hooking up my ignition switch with an ez harness. Did you end up splicing the pink and the brown and connecting them to the Ign tab? And what did you do with the black wire which I am assuming is a ground?
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Old 05-29-2012, 10:23 PM   #6
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Re: Ez-Wiring help with ignition hook-up

I recently installed a EZ harness for a customer(he already had the kit)
Personally, I hope I never see another one. The price is according to the quality- very disappointed- the directions are vague at best and the "instruction manual" if you want to call it that, wasn't even correct for the kit.
This was a 12 circuit with the mini fuses.
I know several on here use these and like them, but after using Painless, Ron Francis, and American Autowire i just didn't like it.
That's my 2 cents worth, I am sure the flogging will begin shortly.....
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Old 10-13-2013, 02:59 PM   #7
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Re: Ez-Wiring help with ignition hook-up

So you splice the pink and brown wire together?? Both going to ignition
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Old 10-13-2013, 04:55 PM   #8
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Re: Ez-Wiring help with ignition hook-up

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So you splice the pink and brown wire together?? Both going to ignition
No Pink supplies the ignition coil/hei while brown supplies power to ignition circuits like blower motor/windshield wiper. The pink stays hot while cranking while the brown drops out.
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Old 11-03-2013, 03:48 PM   #9
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Re: Ez-Wiring help with ignition hook-up

So if wiring this up for a '65, where will the brown wire hook up to? I have the pink going to IGN.
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Old 11-03-2013, 05:51 PM   #10
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Re: Ez-Wiring help with ignition hook-up

Or to verify, in the picture, they are hooked up together. Is this correct for the '65?
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Old 11-28-2013, 06:00 PM   #11
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Re: Ez-Wiring help with ignition hook-up

I'm in the process of installing a 12 circuit mini EZ wire harness and don't find it as EZ as the name would suggest the comments about the pigtails are very helpfull Fixit-P
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Old 12-07-2013, 11:26 AM   #12
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Re: Ez-Wiring help with ignition hook-up

Ok im having two problems. My dome light only comes on when I'm cranking my truck to start, and the starter sounds like it's trying to engage when Im turning the truck off. I have the ignition switch wired just like the picture, with pink and brown wires tied in together. With the two problems I'm having, I don't think this is correct.
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Old 12-07-2013, 11:26 AM   #13
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Re: Ez-Wiring help with ignition hook-up

Dangit! Dome*
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Old 12-14-2013, 10:01 AM   #14
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Re: Ez-Wiring help with ignition hook-up

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Originally Posted by concretekiller View Post
Ok im having two problems. My dome light only comes on when I'm cranking my truck to start, and the starter sounds like it's trying to engage when Im turning the truck off. I have the ignition switch wired just like the picture, with pink and brown wires tied in together. With the two problems I'm having, I don't think this is correct.
I guess you have the dome hooked up the acctuator, so it only gets juice for as long as you hold the key in the starting position.
but now I think about it..perhaps you didn't ground it correctly?
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Old 12-14-2013, 10:13 AM   #15
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Re: Ez-Wiring help with ignition hook-up

dome light is getting power straight from the fuse box. and then i ran the other ground side straight to a ground cable i installed on the frame (i know this is not how its supposed to be wired in the end, but im just trying to get it to light up). it lights up when trying to turn the the truck over, but once the truck is turned over and the truck is running, the light goes off. thats what makes me think i have something wired wrong with the ignition switch.
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Old 12-14-2013, 01:03 PM   #16
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Re: Ez-Wiring help with ignition hook-up

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dome light is getting power straight from the fuse box. and then i ran the other ground side straight to a ground cable i installed on the frame (i know this is not how its supposed to be wired in the end, but im just trying to get it to light up). it lights up when trying to turn the the truck over, but once the truck is turned over and the truck is running, the light goes off. thats what makes me think i have something wired wrong with the ignition switch.
Shouldn't the dome light have a constant power and the ground is through the door actuator? so that when you open your door the dome light comes on?
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Old 12-14-2013, 01:10 PM   #17
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Re: Ez-Wiring help with ignition hook-up

the way ive read for it to be wired is that it has constant power from the fuse box, then the ground goes to the light switch. when you turn the light switch all the way one direction, that turns on the dome light. Like i said earlier, im not going to leave the ground of the dome light permanently wired to the frame for ground, im just trying to figure out why the dome light only wants to come on when cranking the truck.
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Old 12-14-2013, 01:10 PM   #18
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Re: Ez-Wiring help with ignition hook-up

even if the ground were wired the right way, the dome light would only be getting power when the truck is cranking.
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Old 12-14-2013, 05:34 PM   #19
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Re: Ez-Wiring help with ignition hook-up

Then I can only come to one conclusion and that is that it gets the power feed over your ign actuator, which only gets power while cranking over the engine.
as soon as the truck runs and the key is back in the running position the light goes off again right?
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Old 12-14-2013, 05:48 PM   #20
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Re: Ez-Wiring help with ignition hook-up

Yes. That's why I'm thinking I wired something with the ignition switch wrong. That and when I turn the truck off, the starter makes a noise like it's trying to engage again. You know the sound your car makes when it's already running and you try to start it again? That's the sound my truck makes when I go to shut the truck off.
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Old 12-14-2013, 06:01 PM   #21
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Re: Ez-Wiring help with ignition hook-up

this is above my paygrade..I understand the the problem, but what I would do is a try and error technique.
Get 7 feet of wire and run a direct feed from your battery to the dome light, just to try.
see if the mysterious problem with the light and the starter motor still exists.
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Old 12-14-2013, 06:03 PM   #22
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Re: Ez-Wiring help with ignition hook-up

Did that already too. Light comes on with power straight from the battery and the other wire straight to ground.
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Old 12-14-2013, 06:16 PM   #23
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Re: Ez-Wiring help with ignition hook-up

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Did that already too. Light comes on with power straight from the battery and the other wire straight to ground.
ofcourse it does, (you mean wen you open the door right?) but let one of them go their "original" way. so the battery feed and then leave the ground as you've got it hooked up now.
and the starter motor still did it's thingy with the direct feed to the dome light?
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Old 12-14-2013, 06:21 PM   #24
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Re: Ez-Wiring help with ignition hook-up

With the battery straight to the dome light, and the ground ran to the headlight switch, it works as well.
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Old 12-14-2013, 06:30 PM   #25
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Re: Ez-Wiring help with ignition hook-up

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With the battery straight to the dome light, and the ground ran to the headlight switch, it works as well.
but the startermotor still wants to engage when you turn off the ignition?
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