Mk2 golf not starting after gearbox change

[underground91]

hi there was wondering if you could help me with a problem..
i have a 1.3 mk2 golf 89

i just changed the gearbox on it,
and now the car doesnt want to fire up, ignition lights like the oil come on but the battery light one doesnt come on at all and stays off
and when i turn the key off, the fuel gauge stays on and so does the handbrake light.. it then cuts out a few mins later..

i also cant hear the starter spining either, what could be possibly wrong..??   

[Bigdunc]

have u put the earth back on?

[underground91]

Yhh put that back on, i checked all plugs around the starter and that too theyre all fine, i just checked now, and the earth on the GB has got abit of rust around it

[Simpson]

sure it is the right gearbox? its not catching flywheel or anything
?

[underground91]

Just got it Sorted last night  , was the gearbox ground, spent an hour n abit ith a wire brush WD40 and some sand paper on the ground, now fires up, no electrical gremlins 

[clipperjay]

Try doubling the earth cable its the best thing as a fail safe due to oxidising!
The best substitue cable I've used is off a corrado they are much thicker and better insulated!