StricklyOldskool

I was in the process of changing the Fusible links over to a FC fuse box and noticed something odd with the coil wiring. There is a BY (Black/yellow) wiring coming from both coils on the + side that go through the harness up to the igniters. When I unraveled this harness I noticed half way up that the two BY wires split. *spliced wires with a crimp with a total of 6 wires* Two wires, one from each coil directly to igniter, and two additional BY wires facing back toward the coils. Now the problem here is that these two heading back toward the coils are cut and I have no idea where they lead. I noticed to that the previous owner made a wire connecting the Leading coils positive side direclty to the battery. Anyone have any idea where the 2 BY wires go, or what happened?

Sorry for the long post but tried to explain in detail what im dealing with. I can post pictures tomorrow if need be.

Thanx

StricklyOldskool

Guess I will need to post some pictures of what im talking about...will get those up in a bit...

Jason Guthrie

I'm stuck on this wiring myself. Lots of pics missing from the archive and my knowledge of the electrical system makes this a bad idea. I'm just so determined.

StricklyOldskool

here is the picture of the BY wiring im refering to... and where the previous owner ran a "Positive" wire directly to the coil.

StricklyOldskool

Jason, as soon as I get this one figured out I will post some pix for you. "are you trying to wire a FC fuse box?"

Jason Guthrie

In my semi-stock 85SE setup, the positive cable comes up from the starter through to the + battery terminal. Half way up, there is a small guage wire off of the + cable (factory looking split) which goes to my Fusible Links. The Fusible Link (where this mystery cable connects) exits to what has been referred to an Ignition Ballast which in turn goes to the Coils. Sounds the same as yours except you make no mention of the Ballast. An interior hood sticker claims that the previous owner installed an MSD product, maybe this Ballast is part of that package...

I've posted a picture of the area to show some of the coloring. If you notice in the picture, a BLACK and YELLOW wire comes from the COILS to the BALLASTS. The BALLASTS go to the FUSIBLE LINKS which inturn have a lead from the + Battery Terminal.

StricklyOldskool

Can you take another picture but a little further back to get a more birds eye view? and without coloring ;]
The Ballast is part of the MSD coil setup...in our ignition setup there was no need for the Ballast but im sure if you use the search tool on the forum or google you might be able to find more info on your ballast and try to remove it. They may have done the same thing with minez. But with you pictures i might be able to figure something out.

btw Nice camber plates

StricklyOldskool

Anyone have in information on where these two wires that are cut on my setup go?!?!?!?

Siraniko

iTrader: (13)

Im 100% positive that the prior owner had ignition problem so he connected a wire directly to the battery (from coil's + terminal).

that black with yellow stripe is for coil's + terminal (and are spliced for both leading and trailing coils).

StricklyOldskool

So what should I lead those two cut wires to? Or should I just make a positive lead like he did after I put the FC fuse box in? I really dont want to leave the mess the way it is, would rather but it back to OEM form.
Thanx for your post Wacky

Jason Guthrie

I'm at work but I will do my best to get a top notch photoshoot of the area and confirm the wiring schema this evening.

My goal is to get rid of as much of the wiring as possible and upgrade the starting to that of the DFDFIS(sp?). To that end, I will be putting in an 88TII alternator, adding a COIL (as per the DFIS schema floating around), and exchanging the Fusible Links for the FC fuse box. One side note though, I haven't started my car in a LONG time. Hence, I have some work to put things back together just to see where I stand. I can't go changing the starting system before I know the car starts with the current system otherwise I won't know what to troubleshoot.
All I'm doing in the electrical stuff right now is changing battery cables, which hopefully I can get back on the Fusible Links correctly. lol

StricklyOldskool

Maybe this will help someone to point out where my problem is. My car is on hold untill I can figure what happen here. Please someone help!!!!

The three BY wires coming from the dizzy area are the 2 from the igniters and one from the condenser

StricklyOldskool

bump.

74RX4

iTrader: (10)

Sounds like the PO disconnected/modified the main relay that supplies power to the ignition system. This relay is located near the clutch master cylinder. It has a white wire that gets constant 12V from the center fusible link. The BY wire that you are asking about sends the white wire's 12V to the ignition system (the splice that you showed) when the relay is triggered. A BW wire that comes from the ignition switch supplies 12V when the ignition switch is turned on. It triggers the relay to supply the high current from the fusible link. The 4th wire is a black ground wire. See the plug on the right for the connector B33 on page 16 of the wiring pdf. The location of the relay is shown on page 17. Notice there are two identical relays. Only one supplies power to the ignition.

So... Your ignition system (coils, ignitors,condensor) are connected to 12V from the battery at all times instead of just when the ignition switch is turned on.

HTH
Ron

Jason Guthrie

My camera was dead so I didn't get any decent photos last night. I'll try again tonight.
On a side note though, could you simplify your ingition system somehow? You mention you are doing the Fusible Link -> FC Fuse box conversion but what about the DFIS swap as well? I plan to do that part before I do the Fusible Links (I think) since it seems more straight forward and has the added value to simplifying the Fusible Link mess. Then again, I haven't done any of this so I could be totally wrong. I just know that my car, though technically running, is parked until I do this very same project.