First love, small trucks with old instruments (5)
I believe the answer is:
lutes
'old instruments' is the definition.
'lutes' can be an answer for 'instruments' (lute is a kind of instrument). I am not sure about the 'old' bit.
'first love small trucks' is the wordplay.
'first love' becomes 'l' (ust letter of 'love').
'small trucks' becomes 'utes' (I've seen this before. I am not sure about the 'small' bit.).
'l'+'utes'='LUTES'
'with' is the link.
Can you help me to learn more?
(Another definition for lutes that I've seen is " Old stringed instruments".)