Need some wiring help

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Feb 22, 2020 | 08:03 AM

#21

John CC

HDF Community Team

Joined: Aug 2018

Posts: 3,011

Likes: 1,190

From: New Hampsha

Quote:

Originally Posted by Dan89FLSTC

The FAA does not approve of solder on terminals, it is a potential failure point due to vibration (I`m an FAA A&P mech).

That's not entirely true. Cannon plugs (MS27499 and the like) are used extensively in older aircraft and they are generally soldered. (That's what I was referring to above.) Current advisories seem to discourage use of solder terminals as they don't (as you stated) present any advantage over crimp connections. (Of course, we don't get our crimpers at Lowes or Harbor Freight.) We still teach soldering in Part 147 schools and it is covered on the practical testing.

Last edited by John CC; Feb 22, 2020 at 09:01 AM.

Feb 22, 2020 | 09:32 AM

#22

Dan89FLSTC

Seasoned HDF Member

Joined: May 2008

Posts: 21,026

Likes: 12,548

From: South Carolina

Quote:

Originally Posted by John CC

That's not entirely true. Cannon plugs (MS27499 and the like) are used extensively in older aircraft and they are generally soldered.

You will find Cannon Connectors all over modern jet aircraft and jet engines, but we don`t use them on automotive stuff...

Crimp connectors are not soldered, that is what we are discussing here.

Soldering a crimp connector does not make it a better connection, it makes it a less durable connection.