 74 combo fuel/oil/guage ....diagram needed, guage diagram needed...thanks |
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| randyt914 |
 Jan 12 2025, 09:31 PM
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#1
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Member  Group: Members Posts: 120 Joined: 6-April 06 From: truckee ca Member No.: 5,832  |
im looking for a pdf file of the 74 guages especially the combo oil/fuel/temp guage with wire color coding and maybe even a printable pdf. Thanks i've got to check the previous owners work....this is my first 74 that was tracked a bit and now would like to make it pass registration and with working lights. I know the green with red is the oil pressure switch so that is one out of 12.... 5 are lights and 3are the temp while 4 are the fuel. Thanks (IMG:style_emoticons/default/flag.gif)
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Replies(1 - 6)
| JeffBowlsby |
Jan 12 2025, 10:04 PM
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#2
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914 Wiring Harnesses Group: Members Posts: 8,819 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None 
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| randyt914 |
Jan 13 2025, 10:38 AM
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#3
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Member Group: Members Posts: 120 Joined: 6-April 06 From: truckee ca Member No.: 5,832 |
QUOTE(JeffBowlsby @ Jan 12 2025, 08:04 PM)  Thanks Jeff ...im just in Alamo...lets get coffee someday..I prob have 5-6 complete fi systems too. I have no idea why ive collected these...prob saving from previous owners tossing them in the trash. 9256780087 |
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| randyt914 |
Jan 13 2025, 10:45 AM
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#4
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Member Group: Members Posts: 120 Joined: 6-April 06 From: truckee ca Member No.: 5,832 |
this is the combo that came with the car.
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| randyt914 |
Jan 14 2025, 02:54 PM
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#5
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Member Group: Members Posts: 120 Joined: 6-April 06 From: truckee ca Member No.: 5,832 |
[bump]
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| Dave_Darling |
Jan 15 2025, 02:37 PM
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#6
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914 Idiot Group: Members Posts: 15,089 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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Look carefully at the plastic connector bodies. You can see a "+" and a symbol kind of like a T with a couple of extra lines above it. Each of these is close to a metal terminal, and it denotes what goes on that terminal.
The + gets switched power. That would be a red/white wire. That's what powers the gauge. The T is actually upside-down in your pic, it is actually three parallel lines getting shorter as they go down, with a line coming off the top line. This is a ground symbol. It gets a brown wire. The third may have a "G" near it; I can't really see it in your photo. This would get the wire from the sender, which is different for each gauge. The fuel gauge sender would be a solid green, if my slightly cut-off scan of the diagram is correct. The oil temp sender wire should be green with a black stripe. You can see these colors on the wiring diagrams that Jeff so kindly pointed out. There is also the low-fuel light in the fuel gauge, which works off of a solid black sender wire and a red/white power wire. The other bulb fittings are for the other warning lights (charging system, oil pressure) and one for gauge illumination. --DD |
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| Literati914 |
Jan 15 2025, 03:07 PM
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#7
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Senior Member Group: Members Posts: 1,809 Joined: 16-November 06 From: Dallas, TX Member No.: 7,222 Region Association: Southwest Region |
Check the pn# but I think this is what you’re looking for:
Attached thumbnail(s) 
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