I changed my altenator and now the battery, brake, and 4wd light stay on and my blower for a/c and heater don't work. When i purchased the altenator they asked if it was 60 or 75 amp and i didn't know so i installed a 60 amp,could this be the problem, my trooper is fully loaded,can anyone help?

I have the exact same issue with a Rodeo I just picked up.


Hope someone can answer this and save me the hours of troubleshooting ahead.

I needed the 75 amp altenatorwith a fully loaded vehicle. My luck was that i went through five of them from Autozone before going to Checker. Edited by: trowbridge73

So now it works correctly?


I'll contact NAPA tomorrow and find out what they sold me.


Mines a base vehicle but at least it's a direction to go in.


(after I dissasembled the entire dash today [img]smileys/smiley6.gif[/img])

Works fine now but the engine is acting up. Waiting for tax return so i can install a 4.3 liter. Tired of the 3.2 b.s. Had it rebuilt and is doing the same thing and it's not the usual valve tick.

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It almost sounds like all of the wires are not hooked up. I think that there is a connector that you plug in to the altenator, but there is also a 10 or 8 ga wire to install.


I could be completely off, i'm just saying that i think it would be wise to double check all of the connections at and around the altenator. Check where they plug into the altenator and where they go on the truck. Also check the fuses under the hood and in cab.
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