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#1 |
Senior Member
![]() Join Date: Apr 2013
Location: Podunk, Texas
Posts: 744
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An ignorant question regarding gauge clusters...
I'm planning on installing a gauge cluster in my '67 GMC - I have the harness in hand and a gauge cluster on order (both used OEM). The original owner of my truck installed an aftermarket oil gauge and ammeter on a mount that hangs below and to the right of the ignition switch - the oil pressure gauge is connected to a pipe that runs to a junction on the engine where the dummy light sender goes - the dummy light sender is screwed into the end of the junction, so both the gauge and the idiot light work, and I assume I can route the pipe to the oil pressure gauge in the cluster.
My question - does a gauge cluster also include an idiot light for the oil pressure? I kinda like oil pressure idiot lights - a light coming on when the oil pressure is low is more convenient than keeping an eye on the gauge. If the gauge cluster doesn't have an oil pressure idiot light, has anyone here rigged up one on their gauge cluster? Thanks in advance for all replies, comments, insults, or whatever! ![]() |
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#2 |
Senior Member
![]() Join Date: Aug 2008
Location: Cedar Park, Texas
Posts: 7,496
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Re: An ignorant question regarding gauge clusters...
There is no idiot light on trucks with factory oil pressure gauges. You could buy a 12v red (or whatever cor would catch your eye) indicator light at the parts store and mount one on yours somewhere though. Also, just an fyi the fittings on the aftermarket pressure tubing will not seal to the oem oil gauge.
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#3 |
Registered User
Join Date: May 2008
Location: Woodlawn, TN
Posts: 275
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Re: An ignorant question regarding gauge clusters...
I actually did get the store bought copper tubing to work on my factory guage. It took a few tries and some hot oil on my boot but all's well that ends well. It is fairly common to use aftermarket guages in these trucks as the factory guages have no numbers to indicate what exactly your engine was doing, chances are the guage actually works as they are pretty stout. My own question is, what is the high psi on the factory guage? My 350 will send the needle into right field when I cold start it.
__________________
Rocinante: 1972 GMC C25, 292, SM465, 14 bolt, power nothing, 440k and still handles my PCS moves Jorge: Kia Roller-skate with lots of buttons for the wife Wovoka: 2017 Indian Chief Vintage, better on gas but not much So far, this is the oldest I've ever been. |
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#4 | |
Registered User
Join Date: Mar 2012
Location: Leanna, TN
Posts: 2,061
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Re: An ignorant question regarding gauge clusters...
Quote:
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=MATTHEW 69 Stepper...Stroked & Bagged ![]() 2003 Chevrolet Z71 Ext. Cab 1995 Cavalier gas saver! |
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#5 |
Registered User
Join Date: May 2008
Location: Woodlawn, TN
Posts: 275
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Re: An ignorant question regarding gauge clusters...
I have had the truck 17 years now and never knew that. TATONKA!
__________________
Rocinante: 1972 GMC C25, 292, SM465, 14 bolt, power nothing, 440k and still handles my PCS moves Jorge: Kia Roller-skate with lots of buttons for the wife Wovoka: 2017 Indian Chief Vintage, better on gas but not much So far, this is the oldest I've ever been. |
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#6 |
Registered User
Join Date: Mar 2003
Location: Cheboygan, MI
Posts: 998
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Re: An ignorant question regarding gauge clusters...
I'm thinking about using an oil pressure / fuel pump safety switch and wiring in a red LED to it, as well. Of course I'll also notice when the fuel pump cuts off... lol.
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Tony Johnson -- '71 Blazer w/L-31 Vortec 350, SM465, NP205, performer intake, edelbrock 1406, HEI, 4" lift, Boyd EFI tank, Vintage A/C My Blazer -- |
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#7 |
Registered User
![]() Join Date: Oct 2009
Location: Phoenix, AZ
Posts: 475
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Re: An ignorant question regarding gauge clusters...
I installed a Camaro tach in my cluster, and it has an oil pressure light in it. So I tee'd into the oil pressure gauge line, and now I have both.
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1971 C10 Longbed, 350/TH350 |
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