hello, I am having trouble getting my temp guage to stop maxing out in my MK3 1JZ swap. I believe I have found the problem which is the #2 wire on the M1 Plug that is brown in colour. Someone had suggested grounding this wire to fix my problem. I have now found the wire but not sure what to ground it too. I did not do the wiring and am slightly noobish, thanks for the help. Pics to come shortly.