1962 Pontiac Bonneville Wonder bar radio fuse size

[1966 Calais]

just installed a reconditoned 1962 Wonderbar radio. Keeping the 7.5 fuse it works a few times and then blows the fuse. Going to put in a 10 amp fuse.

 

Any recommendations of correct fuse  size for a wonder bar seek signal radio>

 

ty Bob

[rocketraider]

Is this one fully transistorized or still a tube unit? 62-63 was around time GM was converting to transistor radios.

 

I have at hand a 1966 Olds Chassis Service Manual. Pontiac should be similar.

 

The CSM contradicts itself on WB fusing. The radio section says WB requires a 7.5a fuse, but the electrical and fuse spec section calls for a SFE-9 (9 amp) fuse for all radios.

 

It's a little scary to think a WB motor would pull enough amps to blow a 7.5a fuse. Is its operation quiet and smooth?

[1966 Calais]

Glenn, it is not fully transitorized. The wonder bar funtion is a tube. it has been completly gone over and is very smooth. Was in excellent condition before I took it to the radio shop

ty Bob

[rocketraider]

Try the higher amp fuse. If it blows that or you smell hot electric components, it might need to come out for a closer look.

[1966 Calais]

ok thank you

 

[Frank DuVal]

The tube just makes the solenoid work (comparing signals). The solenoid draws the current. .

 

Heck, even the Corvair Radio fuse in the fuse block is a 10 amp fuse, even on the all transistor radios.  And they never had the solenoid current to deal with.