Help! polarity

[uts9000]

my neighbor had me charge his battery from a 1970 coupe. finding bolts to fit the side post terminals I charge it and give it back the following day. he reverses the cables. smoke from under dash, not much. now nothing works. fuse link? any suggestions?. this is a standard four speed, 300 hp with air. could be a nice car aside from a few issues that are all age related.

 

[frank_nesta]

B

my neighbor had me charge his battery from a 1970 coupe. finding bolts to fit the side post terminals I charge it and give it back the following day. he reverses the cables. smoke from under dash, not much. now nothing works. fuse link? any suggestions?. this is a standard four speed, 300 hp with air. could be a nice car aside from a few issues that are all age related.

Yes to all. Anything is possible. I am sure there are some melted wires. Check the fusible link, but don't do anything until you are sure nothing is melted under the dash. Proceed with caution.

 

[bill81vette]

Welcome to CAC!!!

as the previous post suggests...check the fusable link and make sure nothing melted....
check the fuses in the fuse box as well...

 

[Antz81]

Welcome to the CAC.

As Frank nesta said, Check and replace the fusible links if needed.
As for what Bill81vette said, i would probably pull all the fuses (and check them) before putting power onto them again, and then replace them 1 by 1 just to be safe. (+ if there is a fault on one of the circuits you should know which on straight away)

I believe there is only a couple of things on a '70 that could be damaged by the reverse polarity.