More car trouble

[ewx]

After behaving for quite a while my car went back to its habit of refusing to start. The RAC engineer seemed more open-minded about the solution than previous ones (it's had two new starter motors to no effect...) and thought it was the ignition switch itself, evidence for this being that connecting the starter directly to the battery started it while turning the key continues not to.

While I was thinking of replacing the car anyway very soon I'd like to be able to reliably start it if only to get it to whatever place I finally part company with it, and conceivably for emergencies. Replacing the ignition switch would be expensive and not 100% certain (perhaps the fault lies somewhere in the relatively inaccessible region between the switch and the starter). But the engineer suggested a rather cheaper workaround.

The idea is to run a wire from the +ve terminal of the battery, via a 30A fuse and a switch on the dashboard, to the starter directly. (i.e. to emulate the green line on this diagram, not the red one.)

But I'm not exactly an electrician; does anyone who knows what they're talking about think this is a sane/insane thing to try?

(updated to link to diagram)

Comments

[hsenag.livejournal.com]

Ah, right. Like I said, I have no idea what I'm talking about :-)