Its not massively expensive for a kit, and theres a fair bit of cable/wire/swedges for the price so you can play around, but perhaps the best indication would be that of the three cams I've tried repairing myself, none live on the rack I take out and are sat in a bag waiting to possibly be re-wired by DMM if I can be arsed (I already have replacements for two of the sizes anyway and the third is a 1.5 which is generally covered by the 1.25 and 1.75 I carry).