Oh that darn heater cable again - it made a short in my GT as well after it
went lose from its control position!
-----Oorspronkelijk bericht-----
Van: Mgs <mgs-bounces@autox.team.net> Namens Steve Shoyer
Verzonden: Tuesday, 31 May 2022 10:09
Aan: mgs@autox.team.net
Onderwerp: Re: [Mgs] 80B, melted white-green wire from ignition switch
Thanks to everyone who replied to my question. I think I understand what
probably happened. I think the bullet connection between the white-green feed
to the radio and the radio's wiring harness (which had an inline fuse) must
have loosened and allowed the bare connector to short to ground, possibly on
the heater control cable. When I removed the radio, there was no longer
continuity between the white-green connector coming from the ignition switch
and ground. I replaced the ignition switch with a new aftermarket one, and I
also replaced the radio. The one that I had been using seemed fine, but it had
a CD player so it was about 6" deep. I picked up a new one without a CD player
(a Jensen unit with Bluetooth for $36) that's less than 2" deep, so there's a
lot more room behind the radio and it should be less likely to cause strain on
the wiring. This radio uses the same style of wiring harness as my old one so
it was an easy swap. Nothing melted when I tried the new switch and radio, so
I think I'm good now. I might try to use a zip-tie to hold the radio wiring in
place and reduce the possibility of pulling the power connection apart. I put
in a 5A fuse for the switched power rather than the 10A fuse that came with the
radio, hoping that it would blow quickly if there was a short somewhere in the
circuit that I didn't see.
--Steve (1980 MGB)
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