Thanks Innuendo and axistr, happy new year as well. I'm still pushing it along and i definitely feel it will go faster now.
So I've been thinking about what to share from 2025 and everything is kind of electrical. To sum it up, i wanted more features and options inside, so I set out doing an electrical overhaul where most of the body functions migrated into the Haltech ECU system. This involved installing another 3 x PD16 units and several input/output modules.
Some examples of the extra control are the headlights and indicators, fans, dash functions, electric A/C, Astra PS, wiper/washers, electric mirrors, electric windows and the heating of the WN Caprice seats. In the end, the only things not running through the Haltech ECU are the horn, central locking and seat motors. So in this post i will share some of the power distribution and wiring stuff. Here's some pics again...
Batteries are underneath the body tucked up behind the passenger seat. From here there are 5 x main power circuits, one goes to the starter motor, one to each PD16 module (3) and one to the fuse box.
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I retained the original Holden fuse box but upgraded it to blade fuses. This was not too hard and just involved cutting in and epoxying some blade fuse carriers to get 18 x circuits in total. I made an associated loom that also picked up the ignition switch and accessories.
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The Haltech Elite 2500 ECU is located on the transmission tunnel and has a PD16 (A) mounted on top of it. There is another PD16 (B) in front of the radiator and a third PD16 (C) located behind the passenger seat. I also needed to do some power reticulation across the radiator mount so i made up a little Amphenol Surlok connector assembly which worked out well. The design for this is on the web if anyone is interested.
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The 3 x I/O modules are mounted under the dash, on the rear of the transmission tunnel and on the A/C box. I will do separate posts later on the dash and A/C system.
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And lastly...I kind of spent the best part of 2025 redoing all my wiring. Its pretty much 95% Haltech looms now and about 5% WB wiring. The last bit of the power system is the twin alternators. These are both 1 wire 140A Aeroflow items off the shelf, and I have connected them in parallel back to the batteries. The theory is that the voltage regulators will each target 14V each, so the current should share evenly...I haven't properly measured this yet, but so far they run fine together and haven't exploded yet...
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That's about it for explaining the power arrangements, I will do a separate post on the seats, A/C and Dash soon.
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