Hi Mike,
I thought about doing that but let’s unpack
this a bit more:
- The Sniper
wiring has heavy red and black leads that are to be
connected directly to the battery. I believe the little (14
gauge) yellow wire to be connected to the “clean 12v” is
merely triggering a relay within the Sniper harness (there
are a few built in it; one to power the fuel pump and
another which I assume powers the ignition). If I add a
relay before the yellow wire isn’t that merely “stacking”
relays?
- If the
cranking voltage is 11 volts, in the end there will be no
more than 11 volts fed through a relay, anyway (during
cranking), right?
Appreciate your guidance,
Jim
Jim,
Add a relay to feed the sniper. Tap the starter relay for
power and trigger the relay with the old ballast resistor
output (gut the resistor and rewire). That will get power
during and after cranking.
Mike
On 12/14/2022 6:18 AM, Jim Jablonski
wrote:
Indeed, Doug and Mike, those were my
immediate suspicions. Oddly enough, after chasing this a
bit I went to basics and tested voltage drop straight
across the battery terminals and my cranking voltage is
only 11 volts with two different known good batteries.
Hmmm.
Now I’m not sure I have a problem, to
be honest, other than this journey started with, according
to Holley, the need for “a clean 12 volt ignition feed
during both crank and run.”
I’m converting a 440 to Holley Sniper
EFI (including Hyperspark ignition management), and in
addition to feeding the EFI controller, the 12v ignition
feed triggers the ignition module.
I think I’m just going to attempt
living with this cranking voltage and hoping it’s
sufficient for startup, knowing I have 12.6 volts during
Run.
I’ll report back if interested.
most electrical problems are a
bad ground
As
always, check the bulkhead connections.
Mike
On
12/13/2022 1:34 PM, Jim Jablonski
(GroovinJim) wrote:
Thanks
Neal. Got it.
Now
if I can just figure out why I am only
seeing 10.5 volts during cranking I
will be good :-D
On
Tuesday, December 13, 2022 at
12:45:36 PM UTC-5 neal wrote:
jim,
i got mine for my 68 off of "my
mopar" , i believe. I just
printed them out and had them
laminated at the copy shop
On
Mon, Dec 12, 2022 at 12:11 PM
Jim Jablonski (GroovinJim) <groov...@xxxxxxx>
wrote:
Hi
folks. Hope the Christmas
season finds you well.
I'm
working on a friend's '68
Barracuda and in need of the
underhood and IP wiring
diagrams. If you have them
would you please send or post?
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