Hello everyone! I just purchased a 62 ranchero 170 3 speed auto. My issue is that it came with a battery that went dead on me so I went to Purchase a new one and was told I needed a different battery. I purchase a battery with 710 cold cranking amps rather than the 550 I had. I installed it it fired right up and I drove it for 20 minutes and parked it. When I removed the key the GEN light stayed on. A few minutes later my generator is smoking so I detach the battery. Verifying i didn't cross the wire which I believe I didn't. Return it for the same size battery that was in the car before and now the gen light stays on When the car is not running. I also feel like it still smell the burning so I have been detaching the battery when it's parked. Any help would be greatly appreciated on what I should do. More questions to come also. Thanks.