icom 738 + IC 710 marine sea atu

[VK3FRNB]

HI all, can i ask a question please re tuners

i have a SEA 1612 connected to a icom 710 marine radio, it works great with a long wire to the top of my mast ( sail boat)
the control cable from the icom 710 to the atu only has +ve and Gnd

i have also installed my Icom 738 and am wanting to use the tuner as well, even though it has an inbuilt tuner.
should i use, the same control connections as the IC 710 ( +ve and Gnd) or should i include the Start and Key connections as well?

thanks for any help you can offer

73

ralph
VK3 FRNB / MM

[N8CPA]

If the Sea 1612 is an RF sensing ATU, as opposed to rig specific ATU's, the ATU won't care if it's an Icom, a Kenwood, or a homebrew xmtr as long as it has operating voltage and RF.