My 427 SOHC Build..... Finally the time has come!

[cobracammer]

There are no fuses between the starter clutch switch and the relay....  It does appear ( possibly) to go through the OEM PCM?

[68fecyclone]

Hi Jason, is their a backup light switch and or neutral safety switch on the trans that did not get hooked up?  Also is every thing else engine related that is electric working. If you actually turned on the key and jumped the starter solenoid would it start and run. Rob

[Heo]

As you you see on the relay 30 is the feed. When you turn the key
you send a signal to 85 or 86 and activate the coil.It pulls the breaker
 points and send
current from 30 to 87 like Nightmist said the problem is you have
no signal to 85 or 86 when you turn the key......I don't think you
 need that relay...you have a starter with a solenoid right? The solenoid
is a big MF relay But what do i know....Don't like those new
 fangled relays and electronics

[cobracammer]

Hey Rob.  No neutral switch on the trans.  I tried jumping the starter with a screwdriver, and it functioned normally, turned the engine over just fine.

[cobracammer]

Hey Heo.  I would love to bypass it at this point.  I have a feeling that from the starter clutch switch, it runs to the PCM.... Then to the relay in the bussed electrical center, and then to starter solenoid.  I am not 100% sure on this, but I would really love to bypass somehow  lol

[68fecyclone]

Hey Jason, I get that it will crank over, but have you actually tried to start it by jumping the solenoid. You might get it started or discover that you have some other electrical issues going on. You could just run a wire from the clutch switch to the starter and bypass every thing else to see if it will start. Just some thoughts to look at. Rob

[Heo]

Perhaps on the stock FI you send some signal
to the Fuelpump, injection,whatever...with the
starter relay.....As i see it you should be able
to bypass everything between ignition and
starter. As long as the gauge on the wire is
right if you don't use the stock FI system
But there is people in here that i assume know
that better than me. So don't take my word for it
Try to bypass the relay with a temporary wire
from clutch switch (you had signal there with turned key?)
 to starter and see whats happen

[cobracammer]

Hey Heo.  Yes, everything works up to the clutch starter switch.  Also, the switch tested fine too.  Just need that signal to make it to the relay ( dont know where the wires go after leaving the switch on the clutch pedal.  I wish they went straight to the relay, but they dont seem to

[Heo]

How do you controll the new fuelpump?and injectors?
if its a separate system. I would at least temporary
trye with a wire from clutch switch to starter if it starts and
run i would skip the relay.....i cant see why you would
need that relay for just the starter. What gauge is the
wire on the starter versus gauge at the clutch switch
mayby the ignition switch cant handle the current.....
But it cant be that high its just for the signal to the
solenoid....

[cobracammer]

Fuel pump is tied into the cars original wiring.  Fuel inj is a FAST system on a seperate ECU. 

[Heo]

Does the fuelpump start when you turn key
to run, Without engaging the starter?

[cobracammer]

Yes  runs constantly 

[Heo]

Wait a minute ...My parents bought a used  500 SEC
with an aftermarket Alarm.One day my father called
me and said it wont start and cursed about electronics
I went there it would not crank no signal to the solenoid
no signal to the  coil as i was checking things i saw he
had something in his hand.Whats that? I don't know
i found it in the center consol, And i pressed this button
but nothing happens
Its for the Alarm Ohhh but nothing happened?
Except the car  wont start? Ohhh i don't thought about
that.... I had to Goggle the Alarm and See how it was installed
to know how to remowe it to get the car to start

same with my stepsons Alarm but there was the siren activated

[cobracammer]

I was looking for a rundown of how to trouble shoot the ignition and found a nice article (workbook).  in following it, I get to the area in which I am having issues.  I am getting to signal to the relay, but have signal (voltage) at the CPP (Clutch pedal Position) switch.  It then says to use the Ohms setting on the Multi-meter to test for continuity between the relay pin location 86 ( which I think should be receiving the signal from the CPP and the actual wire at the CPP (drivers side floor on the clutch pedal) which should feed the relay.

This I think is useful because it seems that there is nothing (ECU/ PCM or otherwise) between the wire on the clutch and the relay......

But also is an issue as the leads on the multimeter would have to be about 10 feet long for me to put one lead on the CPP and the other in the relay pin location.  LOL

[Tboggus]

Jason, I have had to extend my leads before. I have some super long ones I would lend you.