dual temp senders

M

mudbone

Junior Member
I just installed a set of VDO cockpit royal guages in my 47 ford. I received only one temp sender, but my flathead has two. I really don't want to add another temp gauge as I'm trying to stay as original as possible with the dash. Rodtech supplied the custom guage face plate and it looks perfect. My question is, should I stay with only one sender, order a second sender and hook both up to the one guage, or will this give me false readings ? The original setup was both senders toay ? one guage. Which one is the best way ?
Thanks in advance.
 
The 2 pole is not a sender it´s a switch that just indicates overheating by opening.
Wiring your new sender through that switch asuming its a one wire sender will make your gauge drop to zero or peg depending on how meter is setup when switch side overheats.
 
I think one will be accurate for your engine temp. Someone will comment if it is better to install it in left or right head. I use a gauge in one and the stock electric one on the other. Thats how it was when I bought the car and I kept it.
 
I use 2 senders, a switch to select either sender and one gauge. Let's me monitor the temps for piece of mind. Switch is hidden just under the dash.
 
The flathead use two separate cooling systems, right and left, and they will not read the same. I would install a second sender and gauge and place it in a location that is not distracting from the overall appearance, such as inside the glove box.

Note: Just read Tony's post, there is another approach.
 
I have my mechanical gauge in the glove box reading sender from left head. Right sender still runs the stock dash gauge. I only watch the stock gauge unless I'm getting hot. Then I watch the mechanical gauge to know when to stop to cool off.



 
Tony said:
I use 2 senders, a switch to select either sender and one gauge. Let's me monitor the temps for piece of mind. Switch is hidden just under the dash.
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Tony, two senders, a switch and one gauge is a great idea.
...Terry
I'm a little slow replying.
 
I use two sensors controlled with a toggle switch. It works great.:)
 

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In my flathead powered T, I used the same method as Tony NY. Worked great. Note - you must use electrical gauges, not mechanical.
 
JSeery said:
The flathead use two separate cooling systems, right and left, and they will not read the same. I would install a second sender and gauge and place it in a location that is not distracting from the overall appearance, such as inside the glove box.

Yup .. I have three temp gauges! One stock in the stock dash and a left and right in the glove box!:eek:
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Peter, nice setup. I do have a couple of questions. The gauge on the far right says "Manifold Pressure"; is that a vacuum gauge? Your car looks like an unlikely candidate for a super charger, but you never know. Second, where do you keep your gloves?
 
tubman said:
Peter, nice setup. I do have a couple of questions. The gauge on the far right says "Manifold Pressure"; is that a vacuum gauge? Your car looks like an unlikely candidate for a super charger, but you never know. Second, where do you keep your gloves?
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Yes - manifold pressure - Well I must admit that my motor is healthy - gloves slide right under the gauge tray with the 35 owners manual! Click the picture to see whats under the hood.:D
 

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I have run two single pole sender's to two stock gauges - they read well, one may read higher due to a hot water heater but the setup works or at least it did for me ....
 
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