'71 50hp Johnson popping fuses

[Drowned Rat]

Hi guys, trying to get this thing running right. Newest problem is that when I turn the key to start the motor, it immediately blows the small 20amp fuse on the right side of the powerhead. It doesn't crank first or anything. You just turn the key and "Pop"! Any ideas? Is it something simple like a bad ignition switch or something bad like the starter? How do I trouble shoot this? Thanks you for your help.

 

[ferrans]

Re: '71 50hp Johnson popping fuses

I had same problem with my 82 70hp johnson. Had a short in remote. replaced my ignition switch and fixed problem

 

[Walker]

Re: '71 50hp Johnson popping fuses

Yep, you have a dead short to ground somewhere. Could be in switch, motor wiring, accessories or guages.

 

[Drowned Rat]

Re: '71 50hp Johnson popping fuses

Ok, Is there a way to trouble shoot this with a multi tester or can you tell me do you think it's more likely to be one thing than another? Thanks for your quick replys.