different ignitor?

[Volksabu]

I hit up the junkyard for some parts for my '93 turbo motor over the weekend. One of the things I was missing was the ignitor. I assumed that the N/A and turbo ignitors would be the same, so I grabbed the one that looked in the best shape. When I got it home I realized that the one I grabbed only had 5 pins and the clip on my turbo harness has 6. Was this a turbo to N/A difference, or a model year difference? Thanks for the Help.

~Josh

vrg3,
Labaren turbos also have a simal MAP to the ones on the other Chrysler products, it is mounted in a similar location to the one in the minivan picture on your site.

[vrg3]

All North American BC/BF ignitors only have 5 pins. It's a 6-pin connector, but one of them isn't used. Your wiring harness shouldn't have all 6 pins in there... But anyway, it doesn't matter. All North American BC/BF ignitors are electrically interchangeable.

What year was the LeBaron? Is it not an 87-90 Mini-Mopar? I don't know much about Chryslers.

[Legacy777]

Vikash,

I know the ignitor on my 90 MT was different then the ignitor on my 90 AT. I would assume the Hitachi ignition systems are different then the diamond ones?

So they are interchangeable?

[Volksabu]

To be honest, I have no idea what year it was (late 80's-early90's) I was just looking to see that it had the barometric sensor dellie, which it did, and even still had the foam filter on it. I also know nothing about Chrysler products (I have never been a fan).

What I thought was wierd about the ignitor is that it uses the same clip conector. But the one I pulled out of the N/A only has 5 wires, and the Turbo harness definatly has 6 wires coming off it.

Legacy777,
what was the difference? was it 5 pin vs. 6 pin?

~Josh

[vrg3]

Josh (Legacy777) - Yes, the Hitachi and Diamond ignitors are superficially different. They're functionally interchangeable, however.

In fact, the Diamond ignitor used on Imprezas and 2nd-generation Legacies is also of a different shape, but is also functionally the same. I'm using a Diamond ignitor from a 2nd-generation Legacy on my car.

Josh (Volksabu) - The pinouts of the ignitors are the same. If you trace the "extra" wire on your harness I'm sure you'll find it's just a redundant ground, unneeded power supply, or something similar.

These are the pinouts of the ignitor:

Code: Select all

If you look at the connector on the ignitor head-on, the pins are arranged like this:

       _
 _____|_|_____ 
|             |
| 6 5 x 3 2 1 |
|_____________|

1 - Base 1
2 - Base 2
3 - Emitters (joined)
5 - Collector 2
6 - Collector 1

The wiring harness connects base 1 to the ECU's ignition output for cylinders 1 and 2, base 2 to the ECU's ignition output for cylinders 3 and 4, the emitters to the ECU's ignition ground, collector 1 to channel 1 of the ignition coil, and collector 2 to channel 2 of the ignition coil.

[Volksabu]

For the record, the 6th wire going to the ignitor is an ignition switch. I've been trying to sort through this wiring mess for the a couple of days now and and still pretty confused. Vikash's ecu pin out digram has been very usefull as well as Josh's (Legacy777) scanned factory manual, but is the wiring different for a '93? The wire colors don't seem the match up to what the manual says they should be. Which is a pretty big deal since I have no idea where all the the plugs used to be in the car (I only have the harness, not in car). I'm having trouble figuring out what some of the wires connect to (and which wires I actually need to get the motor running), specifically what wires I need that don't go the the ecu. Is there any more '93 specific information out there? any help is greatly apreciated.

~Josh

[vrg3]

Yeah, I've since found that the 6th wire is a yellow/red ignition-switched +12v line. I'm not sure why it's there, though, since the ignitor doesn't use it. Maybe they were gonna do something different at one point?

The wiring on a 93 is almost exactly the same as the wiring on a 92. The wire colors should certainly match up. Are you sure you're orienting all the connectors the right way?

[Volksabu]

wow...I must be slightly retarted, ignition relay does not equal ignitor . I still wish there was a good way to figure out what certain wires do rather than just what the plug into. Such as what are the two yellow wires comming out of the ignition relay (are they just ignition swtiches that are a differnt gauge wire as the other ones?) , can I assume that all solid yellow wire in the harness is ignition switch? or what is the black with yellow stripe that is all over the place? It is really tempting to just save up and get a stand alone so I don't have to deal with this wiring mess. Thanks for the help.


~Josh

[vrg3]

The yellow wires on the ignition relay feed power from SBF-2 to the contacts.

The ignition relay is a dual pole single throw relay. Both poles are supplied power from the same source but they supply power to different stuff. One pole deals primarily with the ECU and the other deals primarily with the electromechanical stuff.

Most ignition-switched +12v wires in the car are yellow-with-red-stripe, not yellow.

Most of the black-with-yellow-stripe wires are grounds, I think.

Do you have any experience doing wiring of this complexity? If you spend some time studying the wiring diagrams most of this stuff should start to become clearer.

Maybe you shouldn't worry about wiring the power supplies identically to the stock Legacy setup. Just do your own stuff that makes sense to you.

And try making a list of all the pins of the ECU and writing next to each pin where the wire goes. Like:

"B48.2 goes to ignition-switched +12v"
"B48.3 goes to white wire of pressure sensor"
"B48.4 goes to black wire of pressure sensor"

Et cetera.

[Volksabu]

I have wired several cars from scratch before, but they have all been carbed, so definatly not as complex. I was not planning on using identical Subaru set up, I am trying to understand what everything is before I start cutting stuff. Thanks for all the help.

~Josh