I need to test the starter motor as it's condition is unknown, it was a "freebie" when i bought the gearbox.

As i don't have access to the haynes manual at the moment i was hoping someone could tell me where to power and jump to get the starter to engage?

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Thanks for the help

Follow up question. I have a box of 3 starters of unknown condition I'll be testing sometime in the next year. They all worked when they came off the cars some 30 years ago. Are these things "GO NO-GO" or is there a way to decide which one is in the best condition.

I might be a little off base here, but I'd do the following:

visual check> electrical check*> inspect the brushes

*be careful due to the starting torque the starter could move too much ripping the wires off the leads and shorting.

Take them down to your friendly local auto parts store (FLAPS).

Take bench testing with a grain of salt. I've had starters test fine on the bench and still act unpredictably when under load. Just saying.

,a 'no load test' isn't the best indicator,these are good starters ,a strip down and clean will really wake them up,biggest issue is the commutator the gets oxidized and the segments get full of crap,you can polish the commutator with fine sandpaper then recut the segments with an old hacksaw blade,but you need to grind the set off the teeth so you don't enlarge the cuts.
If the brushes are worn you can buy new ones @ any good auto electrical shop,usually they are ok.
From a DIY it is a 7 out of ten with fairly simple tools.
Get in there and do it .