fitting streetwise clocks imto a 200

i want to fit a set of streetwise dash clocks into my rover 200.ive pluged them in and got no rev counter or millage showing.ive got a diesel 25 dash i am fitting in but the dash loom is diferant.where it plugs in the fuse box my 200 has 2 plugs and the 25 has 4 plugs.how can i get my clocks to work?.only thing i can see is my 200 loom hasnt got the blue plug on the clock loom.please help want to try and get it sorted over the weekend.thanks paul

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