Changing Wire, Nosram Matrix

[ryan_93]

i need to change the wires to longer ones on my nosram matrix speedo, after reading in the instructions it says avoid soldering for more that 5 seconds per soldering joint. I put the soldering iron on on the tab on the speedo for around 10 seconds and solder never started melting however the speedo started to warm up, am i ok to leave the soldering iron on for longer than about 10 seconds without causing any damage?