No power to switch

[ricksl1]

228 mercruiser ...Was setting the timing, the wrench hit the 50 amp curcuit breaker sparked and stalled , went to start back up "nothing" checked power @ switch is very low ....put a new 50 breaker in and still nothing..normally when i turn switch on i can hear a little ding ding , now dont hear nutin looked all all over for a blown fuse but dont se anything blown ...is there an inline fuse to the ignition somewhere ? my hot to the switch is pink w/ blue stripe i think ,it's only reading .06v HELP !!!

 

[Uraijit]

Re: No power to switch

Yikes! Does your circuit breaker not have rubber boots over the terminals?

You need to find out at what point you're losing power. Start at the beginning of the circuit, and keep tracing forward until you find the loss of power.

Are you getting power to the main terminal on the starter? If not, check cable connections at the battery.

Are you getting power up to the breaker from the starter? If not, your engine probably has a fuse between the breaker, and the starter. Check it to see if it's burned out. It could be either a 55A, or a 90A. Some did not have a fuse at all though.

 

[chiefalen]

Re: No power to switch

Follow the neg cable to the ground Clean it good. Disconnect the pos before you clean it. Leave the pos off the battery.

Follow the positive cable every wire check the ends still intact?

Every connection wire end still there?

Sooner or latter you'll come to the fuses if you have them. You can get them in radio shack the fuses. I keep 2 spares on my boat.

Keep us posted.

 

[ricksl1]

Re: No power to switch

I do have 12 v's on both sides of the main (50amd) breaker...there is 12v @ 1(big) side of starter selonoid (I can jump selonoids across and engine will turn over ..the is no fire on the smaller trrms on selonoid comming from ign switch (yellow/red stripe ) on the main harness there are 2 wires that do have 12 v ..other wire comming off of 50 amp curcuit appeares to be going to alt ? Its an older '82 SeaRay 24.5 ... looked everywhere i could think of for a fuse , but I look again does anyone know where the ign switch gets it's supply from having hard time finding wher it (pink/blue @ switch ) ties in at the motor ...if anyone knows a good wiring schamatic pease lemme know...having hard time trackin wire back , its like it turns into a different wire in the back or something ...will loo a little harder today
Thanks for any info

 

[chiefalen]

Re: No power to switch

The slave selnoid could be bad. You can jump the slave and it turns over? Any auto store will have one. 12 bucks.

 

[Uraijit]

Re: No power to switch

I do have 12 v's on both sides of the main (50amd) breaker...there is 12v @ 1(big) side of starter selonoid (I can jump selonoids across and engine will turn over ..the is no fire on the smaller trrms on selonoid comming from ign switch (yellow/red stripe ) on the main harness there are 2 wires that do have 12 v ..other wire comming off of 50 amp curcuit appeares to be going to alt ? Its an older '82 SeaRay 24.5 ... looked everywhere i could think of for a fuse , but I look again does anyone know where the ign switch gets it's supply from having hard time finding wher it (pink/blue @ switch ) ties in at the motor ...if anyone knows a good wiring schamatic pease lemme know...having hard time trackin wire back , its like it turns into a different wire in the back or something ...will loo a little harder today
Thanks for any info

It depends. Does your boat have an ammeter, or a voltmeter? Do you have a fuse at the starter? If so, what amperage is it? What color is the wire coming off of the starter to the breaker? What are the colors of wires going to the the ignition switch? Are you getting power to the positive side of the coil with the key on?

There are 5-6 different wiring schemes, depending on what accessories the boat had. Do you have a factory manual?

If not, download manual #3. There's a post somewhere on the site with links to download them from. It takes a long time for them to download, because they're quite large, but it will put you way ahead in the game. Instead of asking a question, only to be answered with another question.

We can help you, but we have to know which schematic to look at to help you out.

Before we go any further though, are you 100% certain that the shifter is in neutral?

 

[Don S]

Re: No power to switch

One of your problems is looking for that pink/blue wire you have at the switch. It's faded and is actually a red/purple wire. Goes through the round main harness connetor on the engine and gets power from the starter slave solenoid.

 

[ricksl1]

Re: No power to switch

I'll try and look up manual .....meanwhile , the wires at the switch are (red/blue where blue could be purple looks blue to me ,a yellow/w redstripe and a purple one ...i saw the yellow/red on selonoid/slave tested both smaller wires(on selonoid with switch to starter and don't have 12v on either ...maybe i should try turning switch over and see if i get any voltage there then ? right now there is nothing @ coilw/switch onprob because ther is no voltage (.006) at the switch to begin with ...man it was such a small spark that caused all this ...

 

[Uraijit]

Re: No power to switch

So what about the other questions I asked about your wiring configuration? Fuse at starter? Based on the diagram that my crystal ball is telling me to look at, your signal is coming in from the engine harness, through the ammeter, which is then routed from 1 terminal on the ammeter, through the neutral switch, back over to a terminal on the other side of the ammeter, and into your ignition switch. There may, or may not be a 20A inline fuse between the ammeter, and the ignition switch.

So, assuming that my crystal ball is correct, your best course of action is to do as follows.

Check the fuse at the starter.

Bad: Replace.

Good: Check for power on the ENGINE side of the connetor, at the Blue/Red wire.

Got juice?

No: Replace wiring between fuse and connector.

Yes: Plug in the connector, and check for power on the other side of the connector.

Connection good?

No: Clean connection with electrical contacts cleaner and a small brush, or rolled up pieces of sandpaper. Fill connector with dielectric grease, and retest.

Yes: Move up to the dash panel. Test for power on the purple wire on the Top right terminal of the ammeter.

Got juice?

No: Repair/Replace wiring between engine connector, and ammeter.

Yes: Test for power on the bottom right connector on the ammeter.

Juice?

No: Check wiring to neutral safety switch.

Juice to switch?

No: Replace wiring

Yes: Replace switch.

Juice?

Yes: Follow wiring from ammeter to starter switch.

Is there an inline fuse?

No: Replace/Repair wiring between ammeter and starter switch.

Yes: Check fuse.

Blown?

Yes: Replace.

No: Retest power at starter switch.

Power?

Yes: Problem solved.

No: Repair/Replace wiring between fuse and starter switch.


NOTE: "Repair/Replace" could mean something as simple as cleaning the wiring contacts with sandpaper and electric terminal cleaner, and re-tightening connection.