Auxillary Battery Option 1TP2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

TC70C10 · 11-19-2003, 04:07 PM

Anyone out there have the factory auxillary battery setup working in the Blazer or F.S. Truck. The option code is 1TP2.

I have a schematic in the back of my service manual. I have a relatively small gauge wire red, coming from a switch on the firewall. The wire from the switch goes to the starter.

I have the factory aux battery tray. I assume to hook it up I'd run a wire to ground and connect the red wire to battery positive.

I assume my alternator will charge both batteries. The aux battery can be used for winch(need $$'s) and trail lights.

I got a new bumper being built by Kennesaw Mountain Accessories with grill guard, brush guard and recessed Pro comps, so a winch is in my future.

Appreciate your comments and/or pics

Tim

Gregsmx · 11-21-2003, 08:16 PM

Tim, I have some pictures from a member here who has a Blazer Chalet. I'll forward the email he sent me to you. I'm hooking up an auxiliary battery set up in my Blazer (not originallyl optioned) so I'm also interested in any data that will be helpful on this subject.

PM me with your email address so I can forward what I have.
Thanks, Greg.

11-19-2003, 04:07 PM	#1
TC70C10 Registered User Join Date: Nov 2001 Location: Harvest, AL 35749 Posts: 337	Auxillary Battery Option 1TP2 Anyone out there have the factory auxillary battery setup working in the Blazer or F.S. Truck. The option code is 1TP2. I have a schematic in the back of my service manual. I have a relatively small gauge wire red, coming from a switch on the firewall. The wire from the switch goes to the starter. I have the factory aux battery tray. I assume to hook it up I'd run a wire to ground and connect the red wire to battery positive. I assume my alternator will charge both batteries. The aux battery can be used for winch(need $$'s) and trail lights. I got a new bumper being built by Kennesaw Mountain Accessories with grill guard, brush guard and recessed Pro comps, so a winch is in my future. Appreciate your comments and/or pics Tim __________________ 1981 K5 Blazer 305, 4spd, 4x4, 4" Lift, custom bumpers, Warn 9.5 Ti Winch 1995 T10 Blazer 4.3L 4x4 (Son's) 2004 GMC Envoy 4.2L 2WD 2005 GMC Sierra Crew Cab Z71 4x4 5.3L 240 Fun Finder Travel Trailer Harvest, AL 35749

11-21-2003, 08:16 PM	#2
Gregsmx Registered User Join Date: Jan 2003 Location: San Antonio Tx Posts: 338	Tim, I have some pictures from a member here who has a Blazer Chalet. I'll forward the email he sent me to you. I'm hooking up an auxiliary battery set up in my Blazer (not originallyl optioned) so I'm also interested in any data that will be helpful on this subject. PM me with your email address so I can forward what I have. Thanks, Greg. __________________ '75 Blazer RAT 4X4 "BLAZIN" - Custom frame off Here's the website I'm uploading pics to: Greg's frame off project



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