New Starter motor solinoids not working

[Wildbill]

Ok it nothing to do with motorhomes my boat but I replaced the solinoids on the starterwmotors what I thought was like for like brand new out the box
When I connected up thay don't work two brand new batteries power getting to them.
But thay don't energise.
Engage the arm I can't work it out
Not verry often I am stumped
Engines are x2 FORD D4 diesel engine
Missing sumthing sumwhare or I have been supplied 24v instead of 12v
Bill

 

[gus-lopez]

I have been supplied 24v instead of 12v

that is a good possibility: Can't really see how you can get it wrong Bill?

 

[PhilMary]

Second the check to see if they sent you a 24v version.

 

[Silver-Fox]

Also do you still have the old ones to just try alls good.

You could link the batteries to make 24v by using jump leads and try a starter?

 

[Landy Andy]

Check the neg to block/s motor. Bad neg is same as a low power

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[jockaneezer]

Check the resistance values of the coils in the old ones and compare them to the new, that should let you know if they've sent the right voltage units ?

 

[L' Hobo]

Have you connected the third, smaller, energiser wire??

 

[donkey]

If they are 24v on a 12v system they will produce nothing other than a large spark if flashed with the wire. No spark, then you do not have a circuit.

Geoff

 

[L' Hobo]

Have you forgotten to re-engage the trip or reconnect the isolator switch that you turned off before messing about with the electrics?

 

[Wildbill]

Also do you still have the old ones to just try alls good.

You could link the batteries to make 24v by using jump leads and try a starter?

The old ones still energis but are intermittent in operation
Bill

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[Wildbill]

Have you forgotten to re-engage the trip or reconnect the isolator switch that you turned off before messing about with the electrics?

No

 

[Wildbill]

If they are 24v on a 12v system they will produce nothing other than a large spark if flashed with the wire. No spark, then you do not have a circuit.

Geoff

Have a circuit ther gots not enigising
Bill

 

[Wildbill]

Have you connected the third, smaller, energiser wire??

Yes

 

[Wildbill]

Check the neg to block/s motor. Bad neg is same as a low power

First thing I done thanks

 

[Colino]

Could be a break in the wiring somewhere. Maybe not a complete break that's why it's intermittent.

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[Wildbill]

Could be a break in the wiring somewhere. Maybe not a complete break that's why it's intermittent.

I have two brand new ones and thay don't energize
Chances of two being faulty is verry slim.
The old ones are intermittent in operation that why I am changing them
Bill

 

[scotzsue]

I have two brand new ones and thay don't energize
Chances of two being faulty is verry slim.
The old ones are intermittent in operation that why I am changing them
Bill

Sorry can't help Bill mum was a dab hand with faulty starters, hope you get it sorted soon.

 

[Wildbill]

Check the resistance values of the coils in the old ones and compare them to the new, that should let you know if they've sent the right voltage units ?

The resistances is almost three times the original one's
Bill

 

[jockaneezer]

The resistances is almost three times the original one's
Bill

I only have a rudimentary knowledge of electricity Bill, but there'll be someone on here who knows about Ohm's Law or whatever it is, but it does sound like you've been given the wrong voltage units ?

 

[Wildbill]

I only have a rudimentary knowledge of electricity Bill, but there'll be someone on here who knows about Ohm's Law or whatever it is, but it does sound like you've been given the wrong voltage units ?

Thay work on 24v I rigged up two battery's
Bill

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[PhilMary]

Problem solved. Onto the next bit.
We await with bated breath.