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08-30-2017, 09:28 AM | #1 |
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Under Dash Resistor
Putting the original coil back on from one of those conversions. This is a picture of a car from this forum and also a diagram showing how to hook the wires up. They look totally opposite of each other. The picture shows the red wire going to the right side dash light wire to the left. The diagram shows the opposite. which is correct or does it make a difference
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08-30-2017, 09:42 AM | #2 |
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Re: Under Dash Resistor
I say it doesn't make any difference since the current passes through the resistor either way.
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08-30-2017, 09:56 AM | #3 |
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Re: Under Dash Resistor
Here's the 36 wiring diagram.
https://www.google.com/search?q=1936...IVE5J3GxCYwgM: Trace the wires back to where they come from to make sure. I think 40cpe is correct. |
08-30-2017, 10:13 AM | #4 |
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Re: Under Dash Resistor
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08-30-2017, 10:27 AM | #5 |
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Re: Under Dash Resistor
Thanks. Will check the voltage at the coil to be sure
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08-30-2017, 10:42 AM | #6 |
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Re: Under Dash Resistor
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Don't forget that a resistor is a load device. The gauges need full voltage to work properly. |
08-30-2017, 01:06 PM | #7 |
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Re: Under Dash Resistor
If it makes a difference which is the way it should be
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08-30-2017, 02:07 PM | #8 |
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Location: Beulah, Michigan
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Re: Under Dash Resistor
Interest in knowing how much voltage you have going to the coil. Your resistor looks like a reproduction. Thanks D.
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08-30-2017, 02:47 PM | #9 |
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Re: Under Dash Resistor
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08-31-2017, 01:01 PM | #10 |
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Re: Under Dash Resistor
The picture of the ballast is of a car that I took at last years meet so don't know if it is a repop
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08-31-2017, 01:38 PM | #11 |
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Re: Under Dash Resistor
Bob56, Here is a diagram that I made for my 35. Notice the main power wire (yellow) going thru the ammeter to the resistor/fuse block. This is the way Henry wired it,
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08-31-2017, 02:00 PM | #12 |
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Re: Under Dash Resistor
That's about the only way it can be wired if you want the ammeter to function, but the question was related to the ballast resistor.
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08-31-2017, 02:22 PM | #13 |
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Re: Under Dash Resistor
I mentioned the yellow wire going thru the ammeter to the terminal block since neither of his diagrams showed any power going to the assembly.
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08-31-2017, 03:57 PM | #14 |
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Re: Under Dash Resistor
Agree, but the issue at hand was the resistor, but good additional information.
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11-08-2017, 10:18 PM | #15 |
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Re: Under Dash Resistor
Are all voltage resistors that are manufactured/sold for our cars equal? Better or worse performance/pricing?
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11-08-2017, 11:33 PM | #16 |
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Re: Under Dash Resistor
The only resistor to be guaranteed correct is an original ford unit. All others may have various specifications that are not necessarily correct. Their ohms rating cold (.5 ohms) might read the same on an ohm meter but if the resistor wire is different material then it may vary in ohms when it heats up and read differently to the ford one. Regards, Kevin.
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11-09-2017, 12:25 PM | #17 | |
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Re: Under Dash Resistor
Quote:
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11-09-2017, 10:17 PM | #18 |
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Re: Under Dash Resistor
Borrowed and temporarily installed a NOS resistor from a friend...says he thinks it's 46-8...but when I measure voltage both TO and then FROM said resistor I get the same 5.8 volts. What am I doing wrong? or is the resistor faulty?
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11-10-2017, 12:49 AM | #19 |
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Re: Under Dash Resistor
If there is no current flowing through the resistor there is no IR drop and the voltage will read the same on both sides. With the points closed and current flowing through the resistor and coil, you should see about a 2 volt drop across the resistor.
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11-10-2017, 11:45 AM | #20 |
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Re: Under Dash Resistor
Sounds to me like a test best performed with the car running...all the distributor bits moving etc..
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