[ngoma]

Very nicely detailed! Downpipe shows considerable skills-- yours?

Where are you planning to put the boost gauge?

Can't quite tell from your latest photos if your IP includes the LDA (for managing boost fueling)(actually, it cuts excess fueling under no- or low-boost conditions).

The engine wiring schematics I have seen (Haynes, Chilton manuals) are not always that helpful. Luckily the diesel engine wiring itself is not complex. The most complicated area is the GP relay wiring. Is your wiring harness deteriorated to the point it can't be trusted?