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External Starter Solenoid?

I was tinkering about the engine bay at 4am(I know, right?) and came across a rogue wire creeping out from the fuse box.

Traced it to a weird looking component sitting on the passenger side of the engine bay, bearing the markings Lucas England and 4ST. Googling revealed it to be a starter solenoid.


Thing is, doesn't my starter motor already come with a solenoid? Seems weird that the PO would go thru the hassle of tinkering with the fusebox to add an external solenoid even if the old solenoid was fried. Thoughts?
 
Funny way of u not sleeping till the morning cos of a car ?

Welcome to the world of ultimate nightmare of owing a classic bmw.
 
This starter is the best solution of the nightmare each owner of a classic bmw.

One of a fastest n easiest form of sorting out the starting process if u search the web enough. The key switch at the barrel is one of the problem. When u acc the key n turn to start, there 8volts current is energized in 0.5 cable to the starter solenoid to make contact to the solenoid to engage the starter motor, the starter motor runs direct from the battery to turn, the solenoid to push the piston inside to engage the flywheel.
Over time, the 8volts signal on the wire goes down n the wire looses its conductivity. Adding on this starter solenoid increases the voltage to energize the solenoid.
A cheap n effective way. Finding the that small wire to change is a tedious job n even I have yet to tackle it.

Best leave it in there n trouble free starting.

Cheers..
 
Funny way of u not sleeping till the morning cos of a car ?

Welcome to the world of ultimate nightmare of owing a classic bmw.
 
pussy;845042 said:
This starter is the best solution of the nightmare each owner of a classic bmw.

One of a fastest n easiest form of sorting out the starting process if u search the web enough. The key switch at the barrel is one of the problem. When u acc the key n turn to start, there 8volts current is energized in 0.5 cable to the starter solenoid to make contact to the solenoid to engage the starter motor, the starter motor runs direct from the battery to turn, the solenoid to push the piston inside to engage the flywheel.
Over time, the 8volts signal on the wire goes down n the wire looses its conductivity. Adding on this starter solenoid increases the voltage to energize the solenoid.
A cheap n effective way. Finding the that small wire to change is a tedious job n even I have yet to tackle it.

Best leave it in there n trouble free starting.

Cheers..
Now I know why they call you the walking encyclopedia... Thanks for the detailed explanation bro... i'll be leaving it as it sits!
 
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