What is the putty type sealant FT used that stays soft I want to seal under some new marker lights etc.
Not sure what FT used but this product works for me on my truck clearance lights
Amazon.com: Colorimetrics Gray Putty Tape / Butyl Tape 1/8" x 3/4" x 30'... (https://www.amazon.com/Colorimetrics-Gray-Putty-Butyl-Single/dp/B00FI5TT72/ref=sr_1_8?ie=UTF8&qid=1514649682&sr=8-8&keywords=seal+putty)
That Butyl tape is standard stuff used by all the RV industry and you can buy it at any RV store
JohnH