Tilt and trim, Jack Plate wiring

[Beantown]

Hi all,
so I bought a used 1989 Champion, 201, that was repowered with an 1986 Suzuki DT200 the tilt and trim only work on the throttle thumb switch, I want to add blinker trim, for this and my jack plate. Jack plate motor was bad so I have a new one, ready to install. I cannot find the relay harness for the jack plate, it was hard wired when I bought it, but didn’t work. A bunch of the wiring harness was melted when I got it, but I have gone through and replaced everything, and I don’t have a typical relay harness, for the jack plate. I also need to fix the bow tilt and trim switch, that has wires dead ended at the back of the boat,
how do you guys think I should approach this? Should I add one relay wiring harness for the jack plate, and just disconnect the thumb switch for the tilt and trim? And what about the front switch? Can I just jump the up and down wires from each switch together? Any input would be appreciated, thanks.

[Jonestrollingmotor]

I would get a "contactor" like used on small winches for the jackplate set the link below. On the Trim wiring, the front trim is paralleled with the wiring from the blinker and the handle switch. I wouldn't disconnect the shifter switch.
https://www.amazon.com/Intermittent-Reversing-Solenoid-Contactor-Switch/dp/B004VAGKZE/ref=sr_1_cc_3?s=aps&ie=UTF8&qid=1530802394&sr=1-3-catcorr&keywords=winch+contactor