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Old 03-09-2009, 05:24 PM
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Installing temp gauge probe 390 Ford Engine

I'm installing oil/temp/alt gauges in my 67 Galaxie with 390 C.I. engine. I want to continue using the "idiot" lights as well as the gauges. Is there another place/point on the engine to connect the water temp probe instead of the point with the original connection (on intake manifold next to distributor)? It is my understanding that you cannot use a "T" fitting. Any suggestions? Thanks in advance, Roy

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Old 03-09-2009, 07:16 PM
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The idiot lights only come on for "HOT" when it's overheating. Worthless. In my '67 mercury / 390 I just hooked up the probe and left the idiot light off. If you're worried about resale value, you can leave the probe connected to the sender and zip tie it somewhere where you won't lose it, then you can swap it back in if you ever need to! Other than that, why would you want the idiot light?
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Old 03-09-2009, 11:20 PM
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Later model 390's had an additional port on the upper rad hose neck, it was used for a temp controlled ported vacuum source for the distributor for the retard function on dual vacuum advance cans.

Find one in the junkyard and use the port for the sender, just remember it sees hot water only once the thermostat opens.
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Old 03-10-2009, 01:05 PM
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Thanks for replies. Replacing the elbow for one with a port should meet my needs. I like having the light as an alternative (heads-up) in case I get complacent and fail to check the gauges as often as I should, which I hate to admit has happened to me.
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