Aux battery harness install: Where is hole placed in firewall??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**DeadheadNM** · 02-12-2013, 11:13 PM

Should have asked before painting

but where does the harness for the aux battery enter the firewall? I assume a new hole needs to be drilled but where? Any detailed pics of a factory install would be hugely appreciated!!!! Thanks, Pete

Sideways · 02-13-2013, 02:51 PM

I went out and took a picture this morning,is this the shot your looking for (red wire)?

**DeadheadNM** · 02-13-2013, 03:57 PM

Quote:

Originally Posted by Sideways

I went out and took a picture this morning,is this the shot your looking for (red wire)?

Thank you for the pic!!!

Sideways · 02-13-2013, 04:24 PM

Glad to help.

**DeadheadNM** · 02-13-2013, 04:34 PM

Looks like it would be centered in the firewall dimple just below where the tach harness hole would go. Good to know for anyone adding one or both of these options. Pete

Sideways · 02-13-2013, 04:47 PM

Looks like I will be drilling a hole for my tach harness!

vidman · 02-13-2013, 05:44 PM

Great info there..Now another question is where does the harness connect to inside the cab?

**DeadheadNM** · 02-13-2013, 06:07 PM

Quote:

Originally Posted by vidman

Great info there..Now another question is where does the harness connect to inside the cab?

Here's a schematic of the harness if that helps....

**DeadheadNM** · 02-13-2013, 06:19 PM

Pic borrowed from another member of the dimples I mentioned with a factory TACH hole. Looks like the hole for the aux battery is centered in the dimple that is second from the bottom whereas the tach hole is centered in the dimple third from the bottom.

Tuff Gong · 02-13-2013, 08:54 PM

What the best way to drill a clean hole for these harnesses?
Posted via Mobile Device

vidman · 02-13-2013, 09:19 PM

Quote:

Originally Posted by DeadheadNM

Here's a schematic of the harness if that helps....

That works...Thanks Man

02-12-2013, 11:13 PM	#1
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,351	Aux battery harness install: Where is hole placed in firewall??? Should have asked before painting but where does the harness for the aux battery enter the firewall? I assume a new hole needs to be drilled but where? Any detailed pics of a factory install would be hugely appreciated!!!! Thanks, Pete __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

02-13-2013, 02:51 PM	#2
Sideways Registered User Join Date: Jul 2007 Location: Left Coast,Canada Posts: 294	Re: Aux battery harness install: Where is hole placed in firewall??? I went out and took a picture this morning,is this the shot your looking for (red wire)? Attached Images

02-13-2013, 04:24 PM	#4
Sideways Registered User Join Date: Jul 2007 Location: Left Coast,Canada Posts: 294	Re: Aux battery harness install: Where is hole placed in firewall??? Glad to help.

02-13-2013, 04:34 PM	#5
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,351	Re: Aux battery harness install: Where is hole placed in firewall??? Looks like it would be centered in the firewall dimple just below where the tach harness hole would go. Good to know for anyone adding one or both of these options. Pete __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

02-13-2013, 04:47 PM	#6
Sideways Registered User Join Date: Jul 2007 Location: Left Coast,Canada Posts: 294	Re: Aux battery harness install: Where is hole placed in firewall??? Looks like I will be drilling a hole for my tach harness!

02-13-2013, 05:44 PM	#7
vidman Registered User Join Date: Jun 2012 Location: Fitchburg,Mass Posts: 737	Re: Aux battery harness install: Where is hole placed in firewall??? Great info there..Now another question is where does the harness connect to inside the cab? __________________ 62 Willys 4wd Pickup : 72 C-10 swb 504 stroker 09 Taco 3" lift 33" tires: 90 K-5 blazer (plow truck): RIP Ross Little brother

02-13-2013, 06:19 PM	#9
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,351	Re: Aux battery harness install: Where is hole placed in firewall??? Pic borrowed from another member of the dimples I mentioned with a factory TACH hole. Looks like the hole for the aux battery is centered in the dimple that is second from the bottom whereas the tach hole is centered in the dimple third from the bottom. Attached Images __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

02-13-2013, 08:54 PM	#10
Tuff Gong Registered User Join Date: Jan 2011 Location: Glendale, AZ Posts: 3,178	Re: Aux battery harness install: Where is hole placed in firewall??? What the best way to drill a clean hole for these harnesses? Posted via Mobile Device



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