tarheeltom
Member
I have a 1994 VP 5.7GL with a DP-C1 drive. It's a good combination and with the help of my Sealoc manual (sometimes) and this great forum I have changed the PDS, U-joints etc. etc. Anyway, the power trim UP recently stopped working unless I press both trim & tilt buttons together. Down works fine. I have checked the T/T switches, checked the wires, swapped the 2 relays in the dash, swapped the 2 relays on the T/T motor and can't find the problem. I tried to trace all the wires but got lost in a maze. Most of the wires from the 2 relays, trim gauge, and T/T switches go into a small black plastic box ( control box ? ). I'm thinking this black box might be the problem but it is too expensive to replace just on a hunch. Has anyone had this problem? Any info/advice would be appreciated. Many thanks!