Opinions on using the wing solenoid as a relay for pre-engaged starter conversion
Turbo Mini Forums

Hello chaps

Standard 998 had an inertia starter ofc whilst my new engine (going in tomorrow WOOOHOOO) has the pre-engaged obv.

I have done much searching about this and found the following diagrams on TMF:





I read about wiring directly to the starter motor will burn out the ignition barrell eventually plus if I can avoid having to replace the battery cable that would be ideal.

What are your opinions on the above wiring as last thing I want is my car to burn out :(

Cheers

thats the way iv just done mine

Done now needs redoing lol

i dont see the point in doing it that way as you are using both solenoids surely it would be better to just extend the trigger wire? and and swap the main cable to the permanent live.

Edited by wolfie on 19th Jul, 2012.

Schrödinger's cat - so which one am I ???

so this is correct and safe then rod? just double checking

Done now needs redoing lol

Yeee this is what I want to know which is why im putting it up here, any boob can make a wiring picture

I never knew that rod, that said i have never swapped between the two either

Yes, it is "safe" - just do the wiring a bit better than the photos, ie put the proper rubber cover over the main terminal (so nothing can short full battery power) and try and avoid those horrible crimp fittings.

The photos don't show the ballast ignition wire (if used) but as you will most likely have the electronic dizzy or MJ it isn't relevant.

I've written this up a couple of times (one just recently) and it's obviously common on the other forums too.

Personally I've installed a normal relay like Leyland did on the later cars - with all the extra loom for EFi etc it was hardly a big deal for me - but using the wing solenoid is perfectly safe, just overkill on its current rating and a bit of an eyesore :)

But it will protect your ignition barrel.

Schrödinger's cat - so which one am I ???

Thanks :)

and yes im using MJ, I take it I can run the perm feed for my megajolt from this? or should I run a cable from the battery?

Edited by Craigie-B on 19th Jul, 2012.

thats good to know i had read another thread on this subject but the pictures where no longer there

Done now needs redoing lol

Schrödinger's cat - so which one am I ???

Thanks Rod :)

I'd leave the wing mount solenoid as it's wired, and then take the flying lead from the solenoid that originally went to the inertia to the battery terminal for the pre engaged, and then loop off the battery terminal to the large spade. That way the only time theres ever power to the pre engaged starter is when the solenoid kicks in. Works in the same way as the inertia then, quite a few people have it wired that way I believe.

Edited by Carlzilla on 19th Jul, 2012.

Edit** as above^

HOLD EVERYTHING!!!!!

This is piss easy and you need not alter ANY wiring!!!!

Simply add a loop of heavy wire from the battery terminal on the starter mounted solenoid, to the large spade terminal on the solenoid itself. Job Done!!!!!!

Leave all the wiring on the wing mounted solenoid as is. the wire from the solenoid to the starter will only be live when the wing mounted solenoid is energised. As soon as as the current is switched onto the starter motor, it will at the same time energise the starter motor solenoid.

Simples

Edited by Sprocket on 19th Jul, 2012.

What I said ^

Sometimes I do get it right, not very often, but sometimes

The battery cable isnt attached yet but this is my solenoid:



So attach the battery to the connection on the right with the nut and brown wires

Then attach a wire from the battery connection on the pre-engaged to the spade on the bottom right which has a black connection on it already?

<3 you guys thanks

Edited by Craigie-B on 19th Jul, 2012.

I think youre confused! Or I am :S
Basically, leave it as it was with the inertia starter.
Put the lead that originally went on the inertia starter on the big connection on the pre engaged starter. Then, from that connection on the pre engaged starter, take a wire off that to the large spade terminal next to it on the pre engaged starter.

I know its messy, but the ONLY thing you have to do is the blue lines on this picture...

thats the black one, the battery cable isnt attached atm

Thanks for the picture Carl makes alot more sense now I can see it visually

30a cable be okay? I have some spare sub wire, would that be better?

My microsoft paint skills are fucking immense. :cool: