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#1 |
Registered User
Join Date: Sep 2012
Location: gold coast
Posts: 40
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fuel sender question
Iv got a 79/80 c30 with twin fuel tanks, the sender wires come into the cab under the seat and stop right there, where should they go to?
this is a truck I brought recently with the dash all dismantled so Im putin her back together |
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#2 |
Moderator
![]() Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,951
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Re: fuel sender question
They run to the switched terminals of the tank selector switch.
The actual dash gauge feed comes from the common terminal on the three wire side of the selector switch.
__________________
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...
And please let us know if and how your repairs were successful. |
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#3 |
Registered User
Join Date: Sep 2012
Location: gold coast
Posts: 40
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Re: fuel sender question
mine just has a plain toggle swicth, dosnt look factory at all, there must be somthing missing
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#4 |
Moderator
![]() Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,951
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Re: fuel sender question
You can use a DPDT ON-ON toggle switch in place of the plastic GM switch. This may be what was done on your truck.
Here are the wiring diagrams for the 1979 GM light trucks. https://rapidshare.com/files/3878583...0_Wiring_o.pdf
__________________
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...
And please let us know if and how your repairs were successful. |
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#5 |
Registered User
Join Date: Sep 2012
Location: gold coast
Posts: 40
|
Re: fuel sender question
my toggle has 3 terminals on power on. Iv got the power going to the fuse box. not sure exatly where on the fuse box but its works the solinoids, the two wires coming from the senders are just floating under the seat.
if I join them to the toggle how will the gauge get a signal? I couldnt open your link sorry |
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