No power to gauges/motor. Trim and Bilge have power

TJ Mills

Recruit
Joined
Mar 2, 2022
Messages
3
I have a 2005 Mercury 150 EFI Two Stroke. Trim motor is getting power. Bilge pump has power. But I have no power getting to my gauges or to the motor.

Do you believe this is an issue with the ignition switch? I replaced it last year and haven’t had any issues until trying to run the motor on muffs yesterday.
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
16,337
Do you believe this is an issue with the ignition switch?
Doubt it.......Switches loose functionally, typically don't fail outright.

Rule #1 of troubling electronics.........confirm you have power at said accessory, ie, ignition switch?

If not, then one step backwards......the main power feed to the switch.
 
Last edited:

ThomW

Chief Petty Officer
Joined
Aug 8, 2016
Messages
615
Check all your grounds and make sure they are clean and secure.
 

TJ Mills

Recruit
Joined
Mar 2, 2022
Messages
3
Doubt it.......Switches loose functionally, typically don't fail outright.

Rule #1 of troubling electronics.........confirm you have power at said accessory, ie, ignition switch?

If not, then one step backwards......the main power feed to the switch.
Please forgive my ignorance, but if I’m using a multimeter, what wires from the ignition switch should I be checking? Red and black? Thank you
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
16,337
I have a 2005 Mercury 150 EFI Two Stroke. Trim motor is getting power. Bilge pump has power. But I have no power getting to my gauges or to the motor.

Do you believe this is an issue with the ignition switch? I replaced it last year and haven’t had any issues until trying to run the motor on muffs yesterday.
Start here....
Screenshot (5).png
 

TJ Mills

Recruit
Joined
Mar 2, 2022
Messages
3
Thanks for your help. I ended up taking it to a marine mechanic. The ignition switch was faulty. Be careful what you buy on Amazon!
 
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