Skip to content
View in the app

A better way to browse. Learn more.

Ultimate Subaru Message Board

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

81 brat- fuses and wires get hot!

Featured Replies

any electrical types out there?

 

why would the fuses and wires for the headlights [where the wires go into the fuseblock] get incedibaly hot when the headlights are on? fuseblock is cool unless lights are on- turn them on and the fuse for headlights gets real hot, does not blow, yet. got hot enough where the plug- in connector on the back has started to melt.

 

old wiring? so the resistance is too much? bad ground? fuse is the correct amperage and is tight in the connectors.

 

should i wire the headlights on a seperate new circuit?

 

im not an electrical genius, or any other kind, so any pointers?

 

thanks for any replies.

Hot wiring or fuses indicate a bad connection somewhere. Make sure the fuses are tight in their holders. Make sure metal connectors are tight (plastic in the connector housing can turn brown from the heat indicting a poor connection).

The energy released (heat) in a electrical circuit is equal to the current squared time the resistance I*I*R. Sounds like the current is normal since the fuse is holding. So, that means you must have a high resistant joint, probably a connector or fuse holder.

RLM

I had the same problem in my 78 Brat when I got it about a month ago. The wires on the back of the fuse box were melted. Someone before me had put a resistor on the wire to try and fix the problem. The fuse box was even melted! I solved this by going to the junk yard and getting another headlight switch and a new fuse box from another brat. Works fine now. I'm thinking that was the problem with my brat. Maybe yours too. Good luck!

This was a problem on all Gen 1/ Stage 2 cars. There was a recall back then to address this. They added in a new heavier fuse.

 

If you look at most Gen 1's fuse block wiring, you will find the plastic to be either melted somewhat, or REALLY melted.

 

Try pinching together the small cips that hold the fuse and reinsert it. Remember, resistance generates heat.

 

Todd

Please sign in to comment

You will be able to leave a comment after signing in

Sign In Now

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.