1967 fuse block to firewall connection - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**dtkarst** · 05-29-2022, 07:49 PM

I’m working on my 67 and here lately it’s been starting fine then losing everything then back to starting fine again. My issue is coming from where the harness from the engine connect to the back of the fuse block. If the red power wire is sitting right I get juice but lose it sometimes as soon as I turn the key. I have several parts trucks I can splice the connector on to see if that does it but I was curious if anyone has done it before and it completely solve their problem. I’d like to only have to do it once. Let me know how you fixed it, thanks

**HO455** · 05-30-2022, 10:02 AM

I'm not sure I understand your problem. Are you saying that sometimes you lose power to the fuse block from the battery?

https://67-72chevytrucks.com/vboard/...d.php?t=185856

midniteblues · 05-30-2022, 11:52 AM

Years ago Ive come across a badly corroded terminal on the main power wire on the fuse block/harness connection on the firewall of one of my 67's. Basically corroded the spade(forget the correct name of this one) rite off the wire

I would intermittently lose power in the cab, iirc I had power everywhere else.
There's some tar like sealer sealing the terminals that helps but certainly didn't prevent.

Luckily I just pulled a good wire and terminal from another harness I had laying around.

AllGoNoShow · 05-30-2022, 07:16 PM

Just to save you a search because I replaced some of the connectors/wires coming out of that connector/fuse panel on the firewall (if you think that is where your problem is)...they are "56 Series" connectors/terminals. You can get them on amazon.

franken · 05-30-2022, 11:08 PM

Unbolt the underhood harnesses from the fuseblock with a 7/16 socket and check the terminals. They might need to be cleaned.

**michael bustamante** · 05-31-2022, 02:58 PM

i have a modified 67 engine harness thats been converted to hei, internally regulated and electric choke anas well aas the wires extended to fit inside the fender if youre interested,

05-29-2022, 07:49 PM	#1
dtkarst Senior Member Join Date: Nov 2010 Location: Hays, KS Posts: 2,480	1967 fuse block to firewall connection I’m working on my 67 and here lately it’s been starting fine then losing everything then back to starting fine again. My issue is coming from where the harness from the engine connect to the back of the fuse block. If the red power wire is sitting right I get juice but lose it sometimes as soon as I turn the key. I have several parts trucks I can splice the connector on to see if that does it but I was curious if anyone has done it before and it completely solve their problem. I’d like to only have to do it once. Let me know how you fixed it, thanks

05-30-2022, 10:02 AM	#2
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,805	Re: 1967 fuse block to firewall connection I'm not sure I understand your problem. Are you saying that sometimes you lose power to the fuse block from the battery? https://67-72chevytrucks.com/vboard/...d.php?t=185856 __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban the WMB,1991 S(stink)-10 Blazer,1969 GTO, 1970 Javelin, 1952 F2 Ford 4X4, 29 Model A, 72 Firebird. 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 Last edited by HO455; 05-30-2022 at 10:09 AM.

05-30-2022, 11:52 AM	#3
midniteblues Registered User Join Date: Jul 2011 Location: strausstown pa Posts: 3,394	Re: 1967 fuse block to firewall connection Years ago Ive come across a badly corroded terminal on the main power wire on the fuse block/harness connection on the firewall of one of my 67's. Basically corroded the spade(forget the correct name of this one) rite off the wire I would intermittently lose power in the cab, iirc I had power everywhere else. There's some tar like sealer sealing the terminals that helps but certainly didn't prevent. Luckily I just pulled a good wire and terminal from another harness I had laying around. __________________ 81 camaro 355 4/spd 342 posi my first love. 67 swb step 454/4spd ott 373 posi 4/7 drop. 2000 s10 zr2 little blue truck that never gets stuck. '74 heald super bronc vt8. tecumseh powered moon rover.

05-30-2022, 07:16 PM	#4
AllGoNoShow Registered User Join Date: Feb 2020 Location: Rochester, NY Posts: 200	Re: 1967 fuse block to firewall connection Just to save you a search because I replaced some of the connectors/wires coming out of that connector/fuse panel on the firewall (if you think that is where your problem is)...they are "56 Series" connectors/terminals. You can get them on amazon.

05-30-2022, 11:08 PM	#5
franken Registered User Join Date: Jun 2013 Location: Somewhere Posts: 3,052	Re: 1967 fuse block to firewall connection Unbolt the underhood harnesses from the fuseblock with a 7/16 socket and check the terminals. They might need to be cleaned.

05-31-2022, 02:58 PM	#6
michael bustamante Senior Member Join Date: Sep 2007 Location: Albuquerque NM Posts: 7,814	Re: 1967 fuse block to firewall connection i have a modified 67 engine harness thats been converted to hei, internally regulated and electric choke anas well aas the wires extended to fit inside the fender if youre interested, __________________ 1967custom



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