No voltage to dash

[Bennett38]

My neighbor changed alternator and hooked wires incorrectly.
Now there is no power to the alternator or dash. Is there an inline fuse somewhere that could be the cause. If so where is it located?

Thanks.

 

[makomark]

My neighbor changed alternator and hooked wires incorrectly.... Now there is no power to the alternator or dash....

Then its more likely to be a wiring issue (especially with "no power" at the alternator, assuming you are trying to measure +12VDC.

 

[Bennett38]

It had power before the repair.
I had them correct the connection. But still no power.

 

[makomark]

knowing which 'flavor' of engine you have will only help us reading your posts.

If you don't see battery voltage across the beg RED and BLK wires, coming from the engine harness, under the dash, then check the simple things first - main battery switch OFF, main circuit breaker (at the engine) tripped...and make sure you have battery voltage across the leads at the engine connections (typically starter and flywheel housing).

 

[Bennett38]

It's a mercruiser. I'm going to check it our tomorrow.

 

[Bennett38]

It was 90 Amp fuse block on top of starter. It's quite the chore to get to. The manifold is heavy af.

 

[Bt Doctur]

Next time turn the battery switch off before working on anything electrical