what is a fusible link?? [Archive] - Chevelle Tech

: what is a fusible link??


Hot66ss
Oct 2nd, 99, 10:32 PM
no more info needed

Thanks

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Hot66ss
Los Angeles,CA

66 Super Sport
67 Malibu
Aces Member 2380
Team Chevelle member #262
members.aol.com/chvellss (http://members.aol.com/chvellss)

Hot66ss
Oct 2nd, 99, 10:37 PM
well i found out what they are now the millon doller question.. where are they located??

Thanks



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Hot66ss
Los Angeles,CA

66 Super Sport
67 Malibu
Aces Member 2380
Team Chevelle member #262
members.aol.com/chvellss (http://members.aol.com/chvellss)

Fred Aldrich
Oct 3rd, 99, 8:41 AM
'67 thru '72 Chevelles have a #14 fusible link in the wire connecting the battery + terminal to the junction block on the back of the rad support behind the battery. '64 does not show a junction block. '65 & '66 have a junction block but the circuit diagram doesn't show a fusible link.

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Fred Aldrich
Web Site: www.GeoCities.com/~69_chevelle (http://www.GeoCities.com/~69_chevelle)

Rick Loncosky
Oct 3rd, 99, 10:03 AM
There's one also off the voltage reg. If you peel the tape back far enough, right befoe it goes into the main harness. This is on a 69. Not sure if 66 had it. Rick..

RT
Oct 3rd, 99, 6:27 PM
If I'm not mistaken, the length of the fusible link is also important in order for it to do it's job properly. Anyone know what it should be?
Rich

Tom Lasater
Oct 3rd, 99, 7:03 PM
I was taught to never exceed 6" when using fusible link. I don't know what would happen if you were to exceed that length.

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Team Chevelle Gold #33
ACES Member #02913
Chevelle Club of Michigan
Livonia, Michigan

ehjorten
Oct 4th, 99, 12:20 PM
The general rule of thumb you can follow is to use 4 wire-gauge sizes smaller than the wire you are using it on (i.e. 14ga wire uses an 18ga fusible link). You can buy these at your local auto-parts store. I have found on some vehicles that the fusible link was changed to an actual in-line fuse that is wrapped in the harness, from the factory.

Kevin Long
Oct 5th, 99, 4:48 PM
I've used fuse wire in place of the links in my starter harness (they were almost totally deteoriated), but I used the same size fuse wire as the size wire I replaced. This at the recommendation of a very experienced mechanic.

Fred Aldrich
Oct 5th, 99, 5:24 PM
EH is correct, fusible links in GM cars are always 4 gauge numbers smaller than the wire their protecting.

Wire Link
10Ga 14Ga
12Ga 16Ga
14Ga 18Ga
16Ga 20Ga
Etc.

Fusible links are really just standard copper wire with low flamibility insulation (silicon over XLPE). However, their not totally flame proof and can start fires. If I'm not mistaken, excessive length increases the fire hazard. Modern designs have eliminated fusible links in favor of Maxi-fuses.

Fred Aldrich
Electrical Engineering Director
Small Car Group, GM (Retired)