77 CJ5 Fuse chart ?

[Bunky67]

Well I got my new gauge installed for my fuel and it appears to work, now I need to figure out what size fuse should go into the fuse panel so this doesn't happen again, they had a 20 amp in there but I know this is not correct,

Does someone have a diagram or Chart of the Fuse panel so I can Check and change the fuses to the correct amperage ???

 

[KParrilla]

The 1977 Jeep technical Service manual says 3amp for the cluster feed

 

[Bunky67]

Thanks for the fuse info You wouldn't happen to have the rest of the fuse info ? I just want to make sure the Previous owner hasn't replace the others with the wrong size fuses,

 

[KParrilla]

Ac/heater. 25 amp

Backup lamps. 15 amp
Cigar lighter

Cluster/brake failure. 3 amp
Parking brake warning.

Headlamps. Circuit breaker
(25 amp)

Panel lights. 3 amp

Radio. 10 amp

Tail stop lamps. 20 amp

 

[leftoflefty]

You fine gents wouldn't happen to have a diagram of the fuse box would you? I put in a new radio in my CJ5 and the fuel gauge and temp gauge don't work anymore. I'm hoping it's just a blown fuse. But I don't know where the fuse for those gauges is.

 

[Saddle Tramp]

You fine gents wouldn't happen to have a diagram of the fuse box would you? I put in a new radio in my CJ5 and the fuel gauge and temp gauge don't work anymore. I'm hoping it's just a blown fuse. But I don't know where the fuse for those gauges is.

This should be enough to figure out what’s up with the gages but 9 times out of 10 the problem has something to do with the connector link between the fuel and temp gages. See fig 3-61 on page 2 of the Instrument Cluster sheets.

 

[leftoflefty]

Thanks a bunch for all that info Saddle Tramp. I pulled my front seats out tonight so I can get up under the dash and do a little inspecting tomorrow.

 

[Bunky67]

The Fuse your looking for to run the fuel and temperature gauge is the one on the bottom right corner, not sure what its marked but it's only a 3 amp fuse if I remember correctly

 

[grunt]

This should be enough to figure out what’s up with the gages but 9 times out of 10 the problem has something to do with the connector link between the fuel and temp gages. See fig 3-61 on page 2 of the Instrument Cluster sheets.

The connector link is prone to going bad quite often? This is common?...

 

[Saddle Tramp]

The connector link is prone to going bad quite often? This is common?...

Not too often but seems to be an issue for some reason; it can be corrosion, nuts coming loose, or the connector breaking. I can’t tell you why but this where I start.

 

[leftoflefty]

OK. I've been dealing with the non-functioning gas gauge as I don't drive the CJ too much. But, I just noticed the defrost/heat/air doesn't work either. The wipers, oil gauge, and battery gauge are all still good. Knowing this, can I narrow it down to something else or should I still be looking at the connector link??

 

[Bunky67]

I don't know much about the connector link. So I'm not help there.
But does the temperature gauge work? Its powered off the fuel gauge. So if work's then you have a gauge,wiring, ground or sending unit issue.

The heater is run off a different circuit so it would be something be another issue.

 

[leftoflefty]

No the temp gauge is on the fritz as well.

 

[leftoflefty]

I have resolved the faulty situation. The ground wire had become disconnected.