98 v70 battery connected backwards
#1
98 v70 battery connected backwards
hey there, i connected the battery the wrong way on my v70. saw smoke come from alternator within 2 seconds. got back in my car and wasn't getting power to anything except the clock and the kilometres. so i jumped the starter to get it running at the moment. i replaced the j relays and it did nothing. dropped the rad to get at the starter and alternator better and tested the wires. i only had power to the signal wire on the starter and the alternator but not the mains.
#2
I had a friend who did this, but I ended up not fixing it myself, so I never needed to really investigate it. I have a wiring diagram, and there are no fusible links evident. If something melted, I guess it was by accident. A surge of power went backwards through the alternator diodes, and the wire that carries that is pretty short, and I think can see it all. The problem must be right there. I wish I could help you more.
#3
I too am not an expert. I believe the starter's relay is built into the starter and if so, it's not the worst thing.
Since you have to take the alternator to a rebuild shop anyway, just bring the starter along too. Tell 'em what happened so they'll save time.
I never heard the term "j relays" before.
Sure hope you didn't fry any expensive dashboard parts or small "computers".
When you install the repaired/checked-out starter and alternator and reach for the key.....well, it'll temper your character.
Since you have to take the alternator to a rebuild shop anyway, just bring the starter along too. Tell 'em what happened so they'll save time.
I never heard the term "j relays" before.
Sure hope you didn't fry any expensive dashboard parts or small "computers".
When you install the repaired/checked-out starter and alternator and reach for the key.....well, it'll temper your character.
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1998v70123 (05-06-2020)
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