I haven't looked that closely at mine since it hasn't given a problem. However, most disassemble from the rear, where the power connects.

I have found that the problem, on other vehicles I've had, is that some kind of contamination, rust, etc., gets around the insulator and shorts things out. Usually, removing it and a couple of shots of brake cleaner resolve the problem.

Performance Products has them but shipping to Canada would hardly make it worthwhile. Salvage would be a better bet.

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Sam

84 300SD 350K+ miles ( Blue Belle )