RE: [DML] Strange Relay

["John Hervey" <john@xxxxxxxxxxxxxxxx>]

Scott, 
On some cars there is no relay, the blue/yellow wire comes from the starter
solenoid to supply as highest voltage to the ignition coil thru the resistor
as possible when cranking. Normally if everything is ok the voltage will be
around 10.25 volts going to the coil. I guess in thinking that there wasn't
any safety built in they would add a relay to handle the voltage thru and
that's why they have them now. I also added this relay to our relay kit
years ago because of it being outside. 
Either way the blue /yellow wire is only good when the car is starting and
as you can see it cuts off and only goes thru 1/2 of the resistor to make
the voltage a little stronger going to the coil.
John Hervey
www.specialtauto.com
www.deloreanautoparts.com
The last of the independent DeLorean parts vendors.


   

-----Original Message-----
From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of
Scot Stern
Sent: Saturday, May 12, 2007 11:32 AM
To: dmcnews@xxxxxxxxxxxxxxx
Subject: [DML] Strange Relay

My DMC, 6452 has a strange relay in the engine compartment.  On one 
of my trips to Don at DMC Garden Grove, a number of years ago, he 
indicated that it was a modification made at the QAC.  

I have an extra relay, located right below the engine cover switch, 
in the engine compartment.  The wiring harness for this relay is 
clearly part of the main harness and appears to be original.  The 
wires are as follows:

It gets a ground from the frame by the resister pack.  

It gets a hot off of the main terminal next to the battery post in 
the engine compartment.  

It has a wire off of the number one terminal on the coil.

It has a wire to the starter.

It would appear, that when the starter is actuated, it trips the 
relay which would then supply 12 volts directly to the coil.

What we be the purpose of this arrangement other than to increase the 
voltage to the coil?  Is it necessary and should I leave it 
installed?  I am reluctant to change anything as it starts fine and 
runs great and it looks like it was original.

Please remember, that this car originally belonged to John's wife and 
was at their home near San Diego.  It only had 3,000 on it when I 
bought it and it does apparently have a few other strange quirks.  
Maybe, QAC did some magic on it as some kind of a test.....

Last night, I had a chance to look at Chris's Delorean, which is one 
serial number higher than mine and his does not have this 
arrangement.  Thoughts? 

Scot Stern
6452 



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