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Old 12-07-2021, 07:46 PM   #9
hatzie
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Join Date: Oct 2008
Location: Wentworth, NH
Posts: 5,020
Re: Swapping gauge insert

It's not oogie boogie. It's also not difficult.
You can swap 1973-80 warning lamp clusters for 1978-80 gauge clusters with some minimal work. Don't use the 73-77 clusters for this.
1973-75 gauge clusters have ammeters and capillary tube oil pressure gauges.
The ammeter was replaced with a Volt gauge in 1976.
The capillary tube gauge was superceded by an electric gauge in mid 1977.

The gauge fonts and colors changed in 1981.

The wiring from the engine bay will work for gauge senders or lamp switches.
The instrument panel plug will need to be re-pinned.
The temp and oil pressure switches will need to be replaced with gauge senders.

Pinout charts are in this thread. http://67-72chevytrucks.com/vboard/s...d.php?t=456877
Year specific GM wiring diagrams are in the manuals thread in my signature.
__________________
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...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; 12-07-2021 at 07:56 PM.
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