Need help 02 seadoo 4tec gtx

[fireboy]

I was out on the water today for about 2 hours, going out was fine, then we sat for a bit and when I went to start the ski back up, I got nothing on the display, and one long beep. However the ski still started. I drove for about 15 mins back to the marina with this happening, the display would turn on and off, kinda as if I kept taking the safety lanyard off and on. I also noticed the display was very weak, you could barley make out what was ur heading. and very blur. The last time this happened it something blew a 5amp fuse and I could not start the ski, the dealer said my battery was loose and I was good to go. Any ideas on what could be up Thanks

 

[fireboy]

update, I just went out and put the key on and, now it beeped twice then one long beep, display keeps going on and off every few seconds, but it will not remain on

 

[fireboy]

Can some one please help me out here

 

[fireboy]

update now no display and gauges do not come on when key is put on post, I can still start the ski, pulled the hood off checked wires going to display, nothing loose nor corroded, alot of conensation behind window in display.

 

[Bills86e]

Add a ground, or use jumper cable battery to engine block. If goes away, cable lugs
need replaced. I have cut many off this year, soldering on new ones & marine heat-shrink the shields.

 

[fireboy]

I just hooked jump cables to my truck to the ground terminals on the block for the battery, didnt work, no display no gauges nothing, i do get beeps and engine will start, 2 short one long and contiues this way

 

[fireboy]

Also i swaped my mpem and ecu with another, still same thing, i dont have the right key for the ecu since it came with the motor, should that matter

 

[fireboy]

anybody else have some ideas