[Fot] A type overdrive problem

[Bud Rolofson]

When I test at the wire soldered to the solenoid (with the plastic cap  
removed so I can get to it) that is when it is "clogged up" and the  
meter reads in the hundredths of volts not 12.75.

Others have said I have amps issue not a voltage issue and the relay  
will do that if the contacts get burnt. That may be the source of the  
high resistance.

Can I test the relay by running a lead from the brown wire directly to  
the yellow purple at the relay and bypass the relay without messing  
something up?

Bud Rolofson

71TR6 CC57365 (Good 6)
71 Spitfire MK IV Race Car #3
66TR4A CTC57529 (The Project)
71F-250 Camper Special (Triumph Support Vehicle)
Z-50A Hardly Davidson 1977 Honda Mini-Trail Bike (Triumph Pit Bike)







On Oct 3, 2012, at 1:01 PM, Bob Bownes - Seiri wrote:

> It could be a high resistance path in the wiring harness. You would  
> get 12v but not enough current to throw the solenoid. Check the  
> voltage with the solenoid on and off.
>
> On Oct 3, 2012, at 11:50 AM, Bud Rolofson <levilevi at comcast.net>  
> wrote:
>
>> The OD on my TR6 stopped working so I did the trouble shooting  
>> process
>> in Dan Master's electrical manual and found I have voltage all  
>> through
>> the circuit all the way to the bullet that connects the (yellow with
>> purple stripe) wire to the solenoid. The voltage can be switched on
>> and off with the OD selector switch on the column so everything works
>> up to the point where it connects to the solenoid. But the solenoid
>> doesn't engage.
>>
>> So the solenoid is bad right? What has me stumped is that the  
>> solenoid
>> will operate if I hook it directly to an extra battery that I have.
>> Why would it work with 12 volts directly but not 12 volts through the
>> circuit? I even swapped out another solenoid from another A type OD
>> and that one does exactly the same thing. Works with a direct hookup
>> to a battery but not with the circuit. I checked to see if the
>> solenoid is grounded and it has continuity according to my meter.
>>
>> With the solenoid hooked to the system when I engage the OD switch  
>> the
>> voltage goes as far as the bullet but doesn't register at the
>> solenoid. It's as if the solenoid "clogs" the flow of the voltage.
>>
>> What could be causing the solenoids to work with a direct battery
>> (voltage measured at 12.11) but not with the circuit (voltage  
>> measured
>> at 12.75)?
>>
>> I'm stumped. How can both solenoids work in one situation and not the
>> other?
>>
>> Thanks
>> Bud Rolofson
>>
>>
>> 71TR6 CC57365 (Good 6)
>> 71 Spitfire MK IV Race Car #3
>> 66TR4A CTC57529 (The Project)
>> 71F-250 Camper Special (Triumph Support Vehicle)
>> Z-50A Hardly Davidson 1977 Honda Mini-Trail Bike (Triumph Pit Bike)
>> _______________________________________________
>> fot at autox.team.net
>>
>> http://www.fot-racing.com
>>
>> Donate: http://www.team.net/donate.html
>> Archive: http://www.team.net/archive
>> Forums: http://www.team.net/forums
>> Unsubscribe: http://autox.team.net/mailman/options/fot/ 
>> bownes at web9.com