fuse size for heater for 70 Cutlass

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Old Jan 12, 2020 | 06:18 PM
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fuse size for heater for 70 Cutlass

I’m trying to find out what size fuse goes in the rubber connector ( looks like it was short ) that is on the d/s wheel well, on my Cutlass, my car was in a body shop sitting and the fuse is not in there.

thank you
Old Jan 12, 2020 | 07:10 PM
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If you are referring to the inline fuse for the blower motor high speed, I recall it is a large one, like 30 Amps.
Old Jan 13, 2020 | 04:22 AM
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Thanks, the fuse looks like it would be shorter than a normal one, to fit in the small rubber connector
Old Jan 13, 2020 | 06:12 AM
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Here’s a picture of the connector on the d/s fender well.

Fuse line?
Old Jan 13, 2020 | 07:32 AM
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Page 1C-16 in the 1970 CSM, General Specifications table. AGC 30 amp.
Old Jan 13, 2020 | 07:36 AM
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Thank you, I appreciate the help
Old Jan 13, 2020 | 11:16 AM
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the 30 amp fuses I have are to long, the connector isn’t large enough. Do they make a shorter size?
Old Jan 13, 2020 | 12:39 PM
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There are a multitude of different glass fuse standards. An AGC fuse is 1 1/4" long. It sounds like you have an SFE 30A fuse, which would be 1 7/16" long. AGC fuses are all the same length no matter the amperage. SFE fuses are different lengths for each amperage. The intent of the SFE standard was that you couldn't put a higher amperage fuse in a circuit designed for a smaller one.



Old Jan 14, 2020 | 07:50 AM
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Originally Posted by abody
the 30 amp fuses I have are to long, the connector isn’t large enough. Do they make a shorter size?
Yes, They make the shorter one you need.
I replaced my Fuse with ones purchased from Autozone or Advance Auto Parts, they sell them
I am at work or I would take a picture of what I picked up. They are made by Buss, If I remember correctly.
Gary
Old Jan 14, 2020 | 09:59 AM
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It's an AGC 30A fuse. They are available everywhere. Do not confuse this with the longer SFE 30A fuses.



Old Jan 14, 2020 | 10:35 AM
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Thanks for the info & picture, hopefully I can grab it today and have some heat for the colder temps coming this weekend.
Old Jan 14, 2020 | 10:43 AM
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That inline fuse only provides power for blower high speed. Your blower should operate at lower speeds without it. If it is not, you have another problem.
Old Jan 14, 2020 | 12:19 PM
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Thanks, I will check my others fuse too. It sat in a shop for 2 years, got it back when they closed down, trying to fix a couple little things with it before the paint and engine get some work done to it. - it has a brown wire hanging down on the d/s near the fuse box, not connected that I have to trace.
Old Jan 14, 2020 | 01:05 PM
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Originally Posted by abody
Thanks, I will check my others fuse too. It sat in a shop for 2 years, got it back when they closed down, trying to fix a couple little things with it before the paint and engine get some work done to it. - it has a brown wire hanging down on the d/s near the fuse box, not connected that I have to trace.
Sounds like the wire that goes to the switch on the e-brake pedal. If you ground it the BRAKE light on the dash should come on.
Old Jan 14, 2020 | 03:39 PM
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Thanks for the help
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