Heat insulation Spartan 3 Lite

Hi all,

Last week I installed Spartan Lite. Due to the design of controller and cable length of LSU4.9 the Spartan is near the turbo and exhaust manifold (20cm/ 8”). I want to heat insulate controller. Does heat sleeves work or maybe heat wrap or even sheets?

How did you guys keep the controller from overheating or more severe damage?