Can you id these elec conn. For me? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Hawssie · 05-28-2013, 11:14 PM

Its been a while since I stripped out this truck for a new engine and trans (among other things) and I forgot or cant figure out what these two items are for. Their both on the firewall. The first is the relay on the middle pass side and the second is the red wire going through to the cowl near the brake booster. The truck is 1970 c10 org. with a 307 and T350 with crank case ventilation. Thanks.

Hardesty454 · 05-28-2013, 11:21 PM

Im probably wrong because it doesnt make sense for placement but the top picture looks like and external regulator for an alternator and the bottom looks like it is for the temp sending unit. Like I said, may be wrong so just a guess.

**leddzepp** · 05-28-2013, 11:26 PM

Top pic looks like horn relay or a speedwarning buzzer, but that would not be their original location. The red wire looks like what was used for an auxiliary battery.
Posted via Mobile Device

SS Tim · 05-28-2013, 11:39 PM

The top picture is the TCS relay. Check out section 6Y in the service manual. The red wire I can't think of at the moment.

05-28-2013, 11:14 PM	#1
Hawssie Registered User Join Date: Mar 2013 Location: Clayton, Ca. Posts: 162	Can you id these elec conn. For me? Its been a while since I stripped out this truck for a new engine and trans (among other things) and I forgot or cant figure out what these two items are for. Their both on the firewall. The first is the relay on the middle pass side and the second is the red wire going through to the cowl near the brake booster. The truck is 1970 c10 org. with a 307 and T350 with crank case ventilation. Thanks. Attached Images

05-28-2013, 11:21 PM	#2
Hardesty454 Registered User Join Date: Feb 2011 Location: Riverbank, Ca Posts: 1,006	Re: Can you id these elec conn. For me? Im probably wrong because it doesnt make sense for placement but the top picture looks like and external regulator for an alternator and the bottom looks like it is for the temp sending unit. Like I said, may be wrong so just a guess. __________________ Rob 1971 c10 - ground up in progress Tripp's Speed Shop Build - http://67-72chevytrucks.com/vboard/s...d.php?t=589750

05-28-2013, 11:26 PM	#3
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,117	Re: Can you id these elec conn. For me? Top pic looks like horn relay or a speedwarning buzzer, but that would not be their original location. The red wire looks like what was used for an auxiliary battery. Posted via Mobile Device __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul

05-28-2013, 11:39 PM	#4
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,507	Re: Can you id these elec conn. For me? The top picture is the TCS relay. Check out section 6Y in the service manual. The red wire I can't think of at the moment. __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban



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