I am in the process of partially rewiring a project from another manufacturer (so won't be mentioned on this forum) and have found most of my dramas being to faulty earths either through lack of sufficient bare-metal contact with terminals or simply because I un-did one and didn't re-attach it.

If your stumped then use a multi-meter (M-M) and trace power from the battery to ignition, starter motor as mentioned and fuse box. Then maybe check Earths for broken wires within the sleeves. A decent M-M will be able to send a signal through the wire. Sorry if this is obvious stuff...


Good luck.