No power to gauges

[traxx1951]

Another question, I have no power to my gauges on my sportster. I have checked all the fuses, and they are good. Problem seems to be no juice coming out of the MPEM to the gauges. My question is, can I just hook up a 12 volt line to the wire that feeds the gauge circuit? maybe on a switch, or intergrated into the key switch??

 

[seadoosnipe]

I wouldn't....

I wouldn't do that. If your mpem is good and the motor runs, the mpem should be sending the power supply to the gages. It's likely a ground wire loose or making a bad contact.

 

[traxx1951]

The motor runs fine, but when I put my test light on the fuse on the MPEM that powers the gauges I get nothing on either side of the fuse. Its the fuel gauge, oil gauge, and the beeper that are not working otherwise everything else works fine.

 

[kustomkarl]

DO NOT use a test light to test anything in the seadoo. Use a multimeter to do any testing. If you mis test and it back flows it WILL cause problems to the MPEM. The same goes for jump starting the battery. DO NOT as it also will surge the power unit and get expensive real quick. I would check the wiring with a multi meter. You need to check for resistance and not for voltage. Check the Pink and Pink/Black wire coming out of the baffle tube in the gas tank. The sending unit works off resistance. Pull the plug apart at the tank, and use an ohm meter to check for resistance between the two pink wires. The resistance will be different depending on how much fuel is in the fuel tank. If you get no resistance, remove the clamps off the sender, and pull the sending unit out of the fuel tank. Check the magnets on the float in the sending unit. To get to the float out, pop the bottom off and look for the 4 magnets on the float. If they are missing use a strong magnet to get them out of the tank bottom. If they are dirty clean them and re-insert it back in the baffle tube and check the wires again to check for readings of resistance depending on where the float is in the baffle tube. If still no reading of resistance replace the sender. If you get readings, check continuity of wiring to guage. If all wiring checks out ok the guage is bad. Keep me posted on your progress. The oil guage is tested the same way. It has 1 Blue/Black and a Blue wire coming from the sending unit.. Unplug it it should read "Low Oil" If it isn't working it needs to be replaced. The beeper use the 12Vdc setting to check for volts to the beeper. If you place you hand over the beeper sometimes you can feel it pulse and no beep. Go to Radio Shack to buy a replacement. They sell for like $12.00. Use the old plug end and solder it to the new unit with shrink wrap to keep out the water and make it water proof.

Karl

 

[traxx1951]

Ok, I apreciate the advise. I will check the sending units with my ohm meter and see what I have..

Thanks