Engine wiring help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**FL71C10** · 02-17-2011, 01:41 PM

I need help temporarily wiring my motor to start it. The wiring in the truck is a mess and I am trying to get the engine hooked up so I can see if it runs ok. I know the heavy positive battery cable goes to the starter (already hooked up). The s terminal on the starter is the one I hook to my switch to engage the starter? Also, a positive wire goes from the battery directly to the distributor? That one I just disconnect to shut it down? it's a 75 or 75Impala 350 with an hei distributor. Is that all I need to know? Obviously I'll wire it up to the ignition key when I permanently hook everything up, but I just want to test start it to see if it will run.

Thanks!

MARKDTN · 02-17-2011, 01:58 PM

The small starter terminal closest to the block says "S". That is the start terminal. Go from there to the battery through a momentary switch to start. If you have an HEI, all you need is a good 12v source from battery to the distributor cap. If you don't care about the alternator, that's all you have to have to make it run.

fixit-p · 02-17-2011, 02:40 PM

Don't forget the negative cable to the engine block

**FL71C10** · 02-17-2011, 03:29 PM

There's a battery ground cable run ning from the battery to the alternator bracket. Do I need one to the engine block as well?

Quote:

Originally Posted by fixit-p

Don't forget the negative cable to the engine block

70chevykidd · 02-17-2011, 03:49 PM

no you don't need one to the block the alternator bracket is a good ground also

02-17-2011, 01:41 PM	#1
FL71C10 Senior Member Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,509	Engine wiring help I need help temporarily wiring my motor to start it. The wiring in the truck is a mess and I am trying to get the engine hooked up so I can see if it runs ok. I know the heavy positive battery cable goes to the starter (already hooked up). The s terminal on the starter is the one I hook to my switch to engage the starter? Also, a positive wire goes from the battery directly to the distributor? That one I just disconnect to shut it down? it's a 75 or 75Impala 350 with an hei distributor. Is that all I need to know? Obviously I'll wire it up to the ignition key when I permanently hook everything up, but I just want to test start it to see if it will run. Thanks! __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now.

02-17-2011, 01:58 PM	#2
MARKDTN Registered User Join Date: Jan 2011 Location: Chattanooga, TN Posts: 2,144	Re: Engine wiring help The small starter terminal closest to the block says "S". That is the start terminal. Go from there to the battery through a momentary switch to start. If you have an HEI, all you need is a good 12v source from battery to the distributor cap. If you don't care about the alternator, that's all you have to have to make it run. __________________ '83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project Last edited by MARKDTN; 02-17-2011 at 01:58 PM.

02-17-2011, 03:49 PM	#5
70chevykidd Registered User Join Date: Jan 2011 Location: Pueblo, Colorado Posts: 49	Re: Engine wiring help no you don't need one to the block the alternator bracket is a good ground also Last edited by 70chevykidd; 02-17-2011 at 03:49 PM.



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