Wiring Ignition
 

Gentleman. I am very close to turning the key for the first time on my LS. My goal is to fire her on my 50th birthday next month. I found my original ignition and key in a box and would like to use it to start the motor. Keep in mind I have the cab sitting on the frame, but basically we have a rolling chassis without any wiring in the cab. How would I go about wiring up the ignition to work? I know i need to go to the starter, but what else and if you have a diagram of the pins I would really appreciate it.

Re: Wiring Ignition
 

All you'll need from the switch to the LS ecm is switch on power...other than that the switch works just like it would on any engine...

Re: Wiring Ignition
 

Well that sounds simple enough, but I took this thing apart so long ago that I don't remember what wire went to where on the ignition. I can a lot of mechanical work, but wiring just throws me.

Re: Wiring Ignition
 

I guess to clarify:

Purple wire = Starter Terminal
Red Wire = To Battery
Brown Wire = Acc Wire (do I need to hook this to anything now?)
Brown/White Wire = Alternator Reg (I assume I don't need)
Pink Wire = Ignition Coil (can I use this one for the ECM?)
Tan Wire = Brake Warning to Dash (don't need now)
Green Wire = Temp Sender to Dash (don't need now)
Dashed Purple Wire = Neutral Start Switch (don't need now)

Is this correct? Thank you in advance.

Re: Wiring Ignition
 

the wire that went to the coil/hei is the one I used for my switch on power....I think it is pink

Re: Wiring Ignition
 

This is how mine is wired anyways:

Purple wire = Starter Terminal (Needed to Start)
Red Wire = To Battery (Needed to Feed Power to Switch)
Pink Wire = Ignition Coil (Yes, Goes to Pink/Black on my Harness to Power ECU)
Brown Wire = Acc Wire (Not Needed Now)
Brown/White Wire = Alternator Reg (Not Needed Now)

Re: Wiring Ignition
 

Thank you cebra and mongocanfly. Looking forward to this.

Re: Wiring Ignition
 

Just confirming...does this look correct?

Re: Wiring Ignition
 

Stepside I just ran across this thread again. I am starting to plan out my power protection plan and bulkhead/PCM harness wiring. Did you wire your alt to the starter? What did you do if I may ask? I'm trying to figure out what size circuit breakers to use and where.

This is something similar to what I am thinking.

https://lh3.googleusercontent.com/Ck...Y=w473-h613-no