Electrical 89 LX 5.0 Dash light issues

Fast89GWILL

New Member
Mar 25, 2019
9
0
1
37
Charlotte
Hi,

Fist post here so thanks for welcoming!

Have an 89 mustang and headlights work, turn signals,interior lights, etc...

Issue is when I turn on the headlight switch my dash lights don't turn on. The dimmer switch also doesn't do a thing.

Am going to check the fuse tonight first but what are your experiences with the headlight switch vs dimmer?

I've read a handful of posts here so have some direction, but still a bit grey.

Thanks.
 
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Fast89GWILL

New Member
Mar 25, 2019
9
0
1
37
Charlotte
Quick update.

With the car on I tested the head light switch on and off. . When off the blue/red has no current. When on it does.

When on I traced that to the dimmer switch which also has power on the blue red. Traced that blue/red to the instrument panel and it has power to the back of the dash.

Starting to think its the cluster.

Anyone have experience with this?
 

Fast89GWILL

New Member
Mar 25, 2019
9
0
1
37
Charlotte
Thanks for everyone's insight on this. Traced everything over some spare time and it was the ground wire. The one right behind the batter a ways. Re-grounded and then decided to redo all the grounds where I could. Amazing how much brighter and consistent some of the electrical got. Thanks again!
 
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