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Old 11th January 2016, 19:47   #1
ROD1
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Default FBH Help

I have purchased a new FBH from Rimmers.
Two numbers are displayed on the FBH: 98570D and 66724C. (see attached photos)



HarryM1BYT states the following

Note - Model 66232C (early) requires +12 volt to pin 1
Whereas Model 98570B (later) requires earth to pin 3

My question is, which configaration is applicable to test the my FBH?
Attached Images
File Type: jpg 98570D.jpg (120.6 KB, 17 views)
File Type: jpg 66724C.jpg (123.2 KB, 14 views)
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Old 11th January 2016, 19:52   #2
David Lawrence
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Quote:
Originally Posted by ROD1 View Post
I have purchased a new FBH from Rimmers.
Two numbers are displayed on the FBH: 98570D and 66724C. (see attached photos)



HarryM1BYT states the following

Note - Model 66232C (early) requires +12 volt to pin 1
Whereas Model 98570B (later) requires earth to pin 3

My question is, which configaration is applicable to test the my FBH?

The number harry refers to is the 98570. That is what you have.

The number on the small label is a serial number, you have the later type which needs 0v to pin 3.

By coincidence 12v to pin 1 will also work, and that is what the car does when the temperature drops below 5 degrees you would find that pin 1 is supplied with 12v, however if you were to splice in an external 12v there you should insert a blocking diode between it and the cars supply to pin 1.

Last edited by David Lawrence; 11th January 2016 at 19:55..
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Old 11th January 2016, 20:01   #3
ROD1
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Default FBH Help

Many thanks David, you were quick out of the blocks!

I was not sure if the 0D rather than 0B made a difference.
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