something like this one from e-trailer that just plugs into your volvo wiring harness and has the diodes in it. https://www.etrailer.com/vm/Volvo/S40/t1
you need an adapter (converter) for your volvo (or any european car) to run a trailer.
white is ground, brown is tail lights, yellow is left turn signal, green is right turn signal.
do a search of the restoration forums on prep
suggest the starcraft forum as there are hundreds of boat restoration and prep threads
https://forums.iboats.com/threads/shoestring-starcraft-ss160-resto-mod-let-the-long-slow-road-begin.721077/page-18#post-5737606
once you get the prep done, see...
you can order them on amazon, your local automotive store, etc.
always use STANT (that is what Mercuiser used for years and that is what CHAMP heat exchangers used)
you cant get both with a prop
to get a better hole shot, you need to go down in pitch
to get a higher cruising speed, you need to go up in motor hp, change gears and go higher in pitch
you wont know until you now put it together and find out how far you have to drop in pitch
about 200 RPM for every 1" of pitch.
what prop do you have now?
