2003 Johnson J70PL4STC 70 hp Outboard no start

[KC9000]

I have a buddy trying to help him fix a issue of no start. He connected his battery up backwards and fried something.
2003 Johnson J70PL4STC 70 hp Outboard
We tested Key ignition and it seems to be good.
We tested 5033264 — RELAY, ECM MAIN and it is switching and seems good.
Checked fuses and no blown fuses. Is there any other things to check?

 

[KC9000]

I have a buddy trying to help him fix a issue of no start. He connected his battery up backwards and fried something.
2003 Johnson J70PL4STC 70 hp Outboard
We tested Key ignition and it seems to be good.
We tested 5033264 — RELAY, ECM MAIN and it is switching and seems good.
Checked fuses and no blown fuses. Is there any other things to check? Tested power to 5031483 — RELAY, TRIM & TILT and we have power there. Tested 5030783 - Relay, Starter Motor and have power there. Maybe I'm testing wrong?

 

[flyingscott]

Hard to believe you did not blow any fuses.

 

[Crosbyman]

deleted

 

[KC9000]

That is exactly what happened. Main wiring harness fuse. Had to reference the motor harness diagram. Then found a pic online that showed a similar motor. My buddy checked the fuse and it was blown. Replaced it and he is back in business.

 

[saltchuckmatt]

Teaching us now I presume?

 

[racerone]

Remember that this a SUZUKI with Johnson decals.