well, attached is the more distant photo and........I removed that wire panel/harness and also attached the picture. Very melted. Now what?
... I guess I'm missing something obvious, but I don't see anything melted in your first image. All I see is the black, tarry goop they used to seal the connector housing so water couldn't corrode the terminals. My '83 and '84 both had that same sealer in the main connectors. David
Could very well be. My first thought was dirty dielectric grease, but without a better photo, we have to rely upon OP's interpretation.
Need better photos. Showing the whole connector, but in focus on the terminals. Need to see signs of melting of terminals, alignment changed as their base belted, arcing, etc..
Hope that's the sealant.
> All was fine before that point, at least it seemed so .
Key there is "seemed so". Something could have been damaged in that install, resulting in the Defroster switch putting something (like supply power or its return from the defrosting ribbon) to ground. But it could be a prior deficiency or damage that worked with the stock stereo/harness, but was aggravated during the new install and/or was too much for the new setup. While suspicious, as it appeared to work before, there's not enough info. And it's not like you have 10 years of "defroster switch
& defrosting worked fine without problem" as a history.
You've shown us photos of what you think is wrong, but not of what is there. Like showing us the melted portion of the stereo harness instead of showing an infocus of the whole harness. You're "filtering" what we see and giving us your interpretation. Photos infocus & hi-res gives us "raw data".
I'd say your number one priority on this is to find out how to post photos in a resolution similar to the one I gave the link to.
You jumped ahead to that connector, but we need to see:
Show the fuse box. In focus. Not low res.
Want to know what is up with the high/low light switch. Photo.
Would still like to see the whole stereo harness to the new stereo. There may be fine signs along it or where it enters the stereo, be it a chassis plug or wires. For the Ground melting, it had high current on it, possibly a short, but where did that current enter the wire.
Wires & connector to the Defroster switch.
So you're going to learn how to trace a schematic. That's got to be covered somewhere on the web. You can start by thinking of it as a garden hose, delivering water (power) from one place/thing to another; and with water pressure (potential / voltage) and water flow (current).
(Technically all our electrical is backwards, as it's electron flow which is negative, so the actual flow is the reverse of how we think of it. This will not matter for what you're doing; you're not building an interface to an undebscribed Chinese board that has a positive ground.)And how to measure voltage & resistance with a multi-meter, and use its continuity setting (if not using resistance as a substitute).
Topic: electrical help needed (Read 20413 times)