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10-25-2014, 12:38 PM
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#1 |
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Registered User
Join Date: Aug 2014
Location: Portland, OR
Posts: 132
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What's this on the firewall?
Hi All,
I was looking around the engine bay for a good place to mount a universal windshield washer pump and saw this on the firewall. What is it? It's near the power brakes on a 71 c10. Thanks! Thanks, Jeff |
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10-25-2014, 01:02 PM
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#2 |
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Registered User
Join Date: Aug 2014
Location: Portland, OR
Posts: 132
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Re: What's this on the firewall?
Updated picture.
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10-25-2014, 01:14 PM
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#3 |
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Registered User
Join Date: Aug 2012
Location: error 404 location not found
Posts: 816
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Re: What's this on the firewall?
To me it looks like a relay someone added but not %100 sure. Im going off my 67 so i dont know if 71 had something like that.
__________________
1995 s10 blazer 4.3 1967 c10 350/350 fleet short 1993 s10 blazer 4.3l 4l60 RIP 6/20/14 2000 mercury sable Thats a how I roll |
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10-25-2014, 01:31 PM
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#4 |
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Registered User
Join Date: Sep 2013
Location: United kingdom
Posts: 127
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Re: What's this on the firewall?
My 71 has that relay, i believe ist something to do with the air con, but not got around to getting it working.
__________________
GMC K1500 1971 350 cu in th350 4wd Bondo Bob c 10 1971 stepside th 350 c10 1970 350 cu in manual air con stepside. |
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10-25-2014, 01:44 PM
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#5 |
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Registered User
 
Join Date: Jan 2012
Location: Whitesboro, Texas
Posts: 932
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Re: What's this on the firewall?
That is the tcs ( transmission controlled spark ) setup. You can search for more information if you want. See this thread
http://67-72chevytrucks.com/vboard/s...=spark+control as it has some good info.
__________________
Cheers - Wayne Our Shop Build - http://67-72chevytrucks.com/vboard/s...d.php?t=620966 '55 Wagon Build - http://67-72chevytrucks.com/vboard/s...d.php?t=689157 1971 Cheyenne Super Ochre/White LWB 350 Auto - my son's truck "Nancy" 1972 GMC K2500 Custom 4X4 Olive LWB 400 SB 4-speed -"Greenie" - Restoration to begin after the '55 Nothing sucks more than that moment during an argument when you realize you're wrong. |
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10-25-2014, 03:13 PM
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#6 |
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Registered User
Join Date: Oct 2009
Location: Phoenix, AZ
Posts: 475
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Re: What's this on the firewall?
Like Daddy'O said, it's the TCS relays. Throw them out. if anyone wants to buy a set they can have mine.
__________________
1971 C10 Longbed, 350/TH350 |
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10-25-2014, 03:53 PM
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#7 |
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Registered User
Join Date: Aug 2014
Location: Portland, OR
Posts: 132
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Re: What's this on the firewall?
Excellent. Thanks, all! Seems like that'll make the perfect spot for a new washer pump once that relay is removed. Appreciate it.
-Jeff |
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10-26-2014, 04:31 PM
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#8 |
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Registered User
Join Date: Aug 2014
Location: Portland, OR
Posts: 132
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Re: What's this on the firewall?
Deleted the TSC relay in favor of a working windshield washer pump. Thanks for the info, all!
-Jeff Last edited by jtinpdx; 10-26-2014 at 04:32 PM. Reason: Forgot photos |
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