my removable front just had a couple of plugs from a metro, 7 wires in total i think, and connected just below the starter solenoid on the drivers side brace bar. never had any probs with water ingress, and they were nice and neat and small,and free from a scrapyard!
with reference to mounting the front, the subframe was solid mounted to the bulkhead and floor, and the brace bars bolted to the front of the subframe, next to the front panel subframe mount. the front was held on with 8 nuts and bolts, 2 as per the usual front panel subframe mount, 1 hidden under each wheel arch, and bolted through the extended a-panel, this way there was no dzus fastners/rubber straps etc on show, and 2 small nuts and bolts each side through what was remaining of the wing rails at the top of the inner wing. the wheel arches weren't cut at all, so had to be removed completely before the front could be removed. i can email some pics if required, should have some somewhere from when i owned the car.
Edited by pinch, 07 January 2007 - 06:23 PM.