242 Limited SE Amp Upgrade

I_squared_r · Sep 8, 2023

I'm picking up a 2019 242 Limited SE tomorrow and I want to replace the factory wetsounds HTX-6-DSP amp with my JL M700/5 amp. I'm seeing online that there aren't RCA's from the factory Fusion MSRA-70NSX, but they sell a harness Amazon.com

Then I would need long RCA's. I would like to get everything done this weekend so I'm thinking to make my own harness at the amp and use the existing wires. Like cut and solder my own RCA's on there. Has anyone done this with success? Anyone have a service manual with a wiring diagram? Is there a remote wire from the Fusion unit?

Adrian @ JB Solutions · Sep 13, 2023

Should work fine with the M700/5... it can take high or low level inputs through RCA. Though I would wait and do it clean.

I_squared_r · Sep 14, 2023

I ended up waiting. I found 23ft wetsounds 6-CH RCA on sale, no tax, $54 with coupon code if anyone is looking. Idk the coupon code, I use the capital one shopping plugin and it automatically searches for coupon codes. Links below for what I needed to install.

For anyone that is looking to do this: The JL M700/5 fits on the left side and I was able to screw into the existing glass/wood and use the existing wiring. Then ran the 23ft RCA cables from the swim platform's head unit to the amp. I installed the bass remote, JL Audio MHD-RLC to the right of the connext dial, but the dash was too thick. I ended up using 2-way tape to mount the remote to the dash and ran the wire through the hole to the amp.

The results are good. I tuned it quickly and now there's excellent bass from the factory wetsounds sub. Enough that the fiberglass panel is vibrating quite a bit. If you're an audiophile you may want to reinforce the fiberglass there.