So I just did an engine swap in my 87. I pulled out 305 and installed the 383. Everything runs fine, but I can’t seem to figure out why I have no horn, no interior light and no radio. I can’t imagine that all of that broke simultaneously. I was thinking maybe a body ground to the motor or something like that? Anybody have any ideas?

 

All wires hooked on the starter lug ? Power loss in the fuse box ?

 

Not sure

 

I unhooked my computer. I hope that has nothing to do with it.

 

CTSY fuse

 

What and where is a CTSY fuse?

 

courtesy fuse , in the fuse box

 

Remove the fuses cover under the steering wheel on the left side.


The CTSY fuse is in this location.

 

So disconnecting, my computer would not affect these accessories at all?

 

🤦‍♂️ is the fuse blown ? Does the fuse how power on both sides ? Might start with the obvious.

 

I’m not the greatest with electronics. That’s why I wanna make sure disconnecting. The computer wouldn’t affect any of these things. So I’m not chasing around something that isn’t there.

 

your going to actually, physically look at the fuse and use a test light or volt ohm meter.

 

But these things should work with no computer hooked up, correct?

 

quit fixating on something that isn’t the issue

 

IN on potentially epic thread.

 

None of the items that you described as not working on your car, are controlled by the computer. Which means the computer has nothing to do with this issue.
This is from the 1988 service manual.

 

I appreciate the help. I will check the fuse on my next day off. I'll post my findings. Thank you so much