PO converted 1982 6.2 k10 to gas....with wiring problems - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**hatzie** · 11-24-2018, 10:04 PM

Usually you're better off to fix the sections of the original harness that are damaged than to buy a one-size fits none harness.
Just do it one section at a time so it's not a massive job.

Parts of the harness like the tail lamps & fuel-gauge wire, forward lamps, HVAC, and the NL2 dual fuel tanks are actually completely self-contained sub-harnesses that plug into the main harness at various points. If one of these is damaged it's fairly straightforward to swap in an undamaged sub harness or just fab a new one. The cab to taillamp harness is an easy one to cut your teeth on. Four wires...

The plug in pictures 1 & 3 is the disconnect for the valve to switch wiring. The Green wires run the shuttle motor on the valve. The third wire is the diesel only water-in-fuel wire from the senders. Later years moved the WIF sensor to the Stanadyne 80 fuel filter cartridge on the firewall.
The Pollack valve also has three more wires running to an internal-to-the-valve switch that handles switching senders to the fuel gauge.
This thread should answer any questions about that system. 1982 is covered in post #2...
http://67-72chevytrucks.com 73-91 Dual Tanks Theory of Operation

11-24-2018, 10:04 PM	#2
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 5,050	Re: PO converted 1982 6.2 k10 to gas....with wiring problems Usually you're better off to fix the sections of the original harness that are damaged than to buy a one-size fits none harness. Just do it one section at a time so it's not a massive job. Parts of the harness like the tail lamps & fuel-gauge wire, forward lamps, HVAC, and the NL2 dual fuel tanks are actually completely self-contained sub-harnesses that plug into the main harness at various points. If one of these is damaged it's fairly straightforward to swap in an undamaged sub harness or just fab a new one. The cab to taillamp harness is an easy one to cut your teeth on. Four wires... The plug in pictures 1 & 3 is the disconnect for the valve to switch wiring. The Green wires run the shuttle motor on the valve. The third wire is the diesel only water-in-fuel wire from the senders. Later years moved the WIF sensor to the Stanadyne 80 fuel filter cartridge on the firewall. The Pollack valve also has three more wires running to an internal-to-the-valve switch that handles switching senders to the fuel gauge. This thread should answer any questions about that system. 1982 is covered in post #2... http://67-72chevytrucks.com 73-91 Dual Tanks Theory of Operation __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful. Last edited by hatzie; 11-24-2018 at 10:15 PM.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.