I am installing my ltcc ignition today and I just want to be sure where I need to cut and solder wires together. I am sure the two pink wires go to the two pink wires that run to the coil and Icm, but I need help on where to connect the yellow and white wires from the ltcc box. Anyone know where the yellow and white wires from the ltcc box connect to the harness on the car? This is on a 1996 harness.

 

Let me know if I am correct here the two LTCC pink are 12v switched from the Icm and Coil pink wires, the white from the LTCC runs to the white on the ICM and the yellow is for some of the window features on the LTCC; if this is the correct I will not be using the yellow from the LTCC then.

 

Yellow
Step Trigger Input - Switched + 12 volt. Energize this input to activate the two-step or retard options.

White
EST input from PCM – connects to the ignition module.

Pink
Hot power to the coils. There are two of these wires.

 

Correct. Just finished mine on a 95. Just tuck the yellow away for now. Pink to pink from coil. White to ICM white.

 

^ Thanks guys I am going to be doing the install tomorrow. What were the benefits you noticed over the stock opti ignition?

 

I noticed it is alot crisper on acceleration and rev. Other than that I've been changing things since it was cold out and am just now getting to play with it again. So beyond that time will tell.

 

Hey man do let us know how it runs was looking at the 24x setup but little high for me the Ltcc caught my liking.

 

I did finally get the car up and running, but I think I might have a problem with the tuning; the car just is not running as smoothly as I would like at idle. Other than the idle it seems to be running good, but I have yet to go wot with it. I really do not notice much of a difference between the ltcc and optispark; but if it holds together and doesn't take a crap on me I will be happy. I am thinking about doing the 24x system so I can tune this thing better, but I might try to have the motor fine tuned with the ltcc and lt1 pcm first; with all of the mods that are done to the car I am just not sure if pcmforless got the tune right on.

 

a dyno tune or atleast the tuner riding with you logging would help. you have added a cam and heads , if i rememeber correctly? pcmforless can get it into the ball park and thats it. a mail order will never be dead on.

 

Pcm4less tune is okay is thats what your using with your new build but they are not perfect. Thats why its always best to have a tuner be able to log and make changes in car so make it spot on. You would be suprised what you pick up over a mail order tune in. I picked up 40rwhp over a base tune. Depending on what cam you are running there might not be much you can do with the idle. What are you running for a tb? When i switched from my 58mm Professional Products to a 52mm Holley there wasa huge difference in idle quality due to smaller blades not being as sensitive.

 

IT has le1 heads with upgraded valves, lt4 hotcam and I am using a 58mm Holley; i figure it should idle fairly smooth with a 3200 stall.

 

have you read about the common issue with said TB? i can't remember if we have had that topic in one of your threads yet. if not do a quick search on here and a few good reads will come up, that should help ya.

 

I can't find find anything on TB issues. I have searched and I have not found a thing yet. If I can't figure this out soon I am going to install a 24x ignition system and have it tune hoping that will help pinpoint of fix my idle issue.

 

http://members.***.net/chipsbyal/page/idle/index.html

try this and let me know if it helps or not. we can go from there

 

^ Thanks I am going to give that a try tomorrow.

 

Sorry to revive this thread but i do have a question about the wiring..

there are 2 pink wires from the LTCC harness, 1 from each coil harness connector

.. are BOTH of these wires connecting to the 1 pink wire from the coil?? So its a 2-1 solder right??

then the white LTCC wire to the white wire on the module.

correct?

 

You are correct

 

thank you! thats what i needed, now just to make my wires and mount the coils